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[gnuastro-commits] master fe0e594 097/113: Imported recent work in maste


From: Mohammad Akhlaghi
Subject: [gnuastro-commits] master fe0e594 097/113: Imported recent work in master, no conflicts
Date: Fri, 16 Apr 2021 10:33:58 -0400 (EDT)

branch: master
commit fe0e5942a09e1c928496d4d67fa0ab41c266d9b9
Merge: 9258f68 aa029b0
Author: Mohammad Akhlaghi <mohammad@akhlaghi.org>
Commit: Mohammad Akhlaghi <mohammad@akhlaghi.org>

    Imported recent work in master, no conflicts
    
    There weren't any conflicts in this merge.
---
 Makefile.am                                 |   2 +-
 NEWS                                        |  37 +++-
 THANKS                                      |   7 +-
 bin/TEMPLATE/Makefile.am                    |   2 +-
 bin/TEMPLATE/TEMPLATE.c                     |   2 +-
 bin/TEMPLATE/TEMPLATE.h                     |   2 +-
 bin/TEMPLATE/args.h                         |   2 +-
 bin/TEMPLATE/authors-cite.h                 |   2 +-
 bin/TEMPLATE/main.c                         |   2 +-
 bin/TEMPLATE/main.h                         |   2 +-
 bin/TEMPLATE/ui.c                           |   2 +-
 bin/TEMPLATE/ui.h                           |   2 +-
 bin/arithmetic/Makefile.am                  |   2 +-
 bin/arithmetic/args.h                       |   2 +-
 bin/arithmetic/arithmetic.c                 |   2 +-
 bin/arithmetic/arithmetic.h                 |   2 +-
 bin/arithmetic/authors-cite.h               |   2 +-
 bin/arithmetic/main.c                       |   2 +-
 bin/arithmetic/main.h                       |   2 +-
 bin/arithmetic/operands.c                   |   2 +-
 bin/arithmetic/operands.h                   |   2 +-
 bin/arithmetic/ui.c                         |   2 +-
 bin/arithmetic/ui.h                         |   2 +-
 bin/buildprog/Makefile.am                   |   2 +-
 bin/buildprog/args.h                        |   2 +-
 bin/buildprog/authors-cite.h                |   2 +-
 bin/buildprog/buildprog.c                   |   2 +-
 bin/buildprog/buildprog.h                   |   2 +-
 bin/buildprog/main.c                        |   2 +-
 bin/buildprog/main.h                        |   2 +-
 bin/buildprog/ui.c                          |   2 +-
 bin/buildprog/ui.h                          |   2 +-
 bin/convertt/Makefile.am                    |   2 +-
 bin/convertt/args.h                         |   2 +-
 bin/convertt/authors-cite.h                 |   2 +-
 bin/convertt/color.c                        |   2 +-
 bin/convertt/color.h                        |   2 +-
 bin/convertt/convertt.c                     |   2 +-
 bin/convertt/convertt.h                     |   2 +-
 bin/convertt/main.c                         |   2 +-
 bin/convertt/main.h                         |   2 +-
 bin/convertt/ui.c                           |   2 +-
 bin/convertt/ui.h                           |   2 +-
 bin/convolve/Makefile.am                    |   2 +-
 bin/convolve/args.h                         |   2 +-
 bin/convolve/authors-cite.h                 |   2 +-
 bin/convolve/convolve.c                     |   2 +-
 bin/convolve/convolve.h                     |   2 +-
 bin/convolve/main.c                         |   2 +-
 bin/convolve/main.h                         |   2 +-
 bin/convolve/ui.c                           |   2 +-
 bin/convolve/ui.h                           |   2 +-
 bin/cosmiccal/Makefile.am                   |   2 +-
 bin/cosmiccal/args.h                        |   2 +-
 bin/cosmiccal/authors-cite.h                |   2 +-
 bin/cosmiccal/cosmiccal.c                   |   2 +-
 bin/cosmiccal/cosmiccal.h                   |   2 +-
 bin/cosmiccal/main.c                        |   2 +-
 bin/cosmiccal/main.h                        |   2 +-
 bin/cosmiccal/ui.c                          |   2 +-
 bin/cosmiccal/ui.h                          |   2 +-
 bin/crop/Makefile.am                        |   2 +-
 bin/crop/args.h                             |   2 +-
 bin/crop/authors-cite.h                     |   2 +-
 bin/crop/crop.c                             |   2 +-
 bin/crop/crop.h                             |   2 +-
 bin/crop/main.c                             |   2 +-
 bin/crop/main.h                             |   2 +-
 bin/crop/onecrop.c                          |   4 +-
 bin/crop/onecrop.h                          |   2 +-
 bin/crop/ui.c                               |   2 +-
 bin/crop/ui.h                               |   2 +-
 bin/crop/wcsmode.c                          |   2 +-
 bin/crop/wcsmode.h                          |   2 +-
 bin/fits/Makefile.am                        |   2 +-
 bin/fits/args.h                             |  50 +++++-
 bin/fits/authors-cite.h                     |   2 +-
 bin/fits/extension.c                        |   2 +-
 bin/fits/extension.h                        |   2 +-
 bin/fits/fits.c                             |   2 +-
 bin/fits/fits.h                             |   2 +-
 bin/fits/keywords.c                         | 264 ++++++++++++++++++++++++----
 bin/fits/keywords.h                         |   2 +-
 bin/fits/main.c                             |   2 +-
 bin/fits/main.h                             |   6 +-
 bin/fits/ui.c                               | 195 ++++++++++++++++----
 bin/fits/ui.h                               |   8 +-
 bin/match/Makefile.am                       |   2 +-
 bin/match/args.h                            |   2 +-
 bin/match/authors-cite.h                    |   2 +-
 bin/match/main.c                            |   2 +-
 bin/match/main.h                            |   2 +-
 bin/match/match.c                           |   2 +-
 bin/match/match.h                           |   2 +-
 bin/match/ui.c                              |   2 +-
 bin/match/ui.h                              |   2 +-
 bin/mkcatalog/Makefile.am                   |   2 +-
 bin/mkcatalog/args.h                        |   2 +-
 bin/mkcatalog/authors-cite.h                |   2 +-
 bin/mkcatalog/columns.c                     |   2 +-
 bin/mkcatalog/columns.h                     |   2 +-
 bin/mkcatalog/main.c                        |   2 +-
 bin/mkcatalog/main.h                        |   2 +-
 bin/mkcatalog/mkcatalog.c                   |   2 +-
 bin/mkcatalog/mkcatalog.h                   |   2 +-
 bin/mkcatalog/parse.c                       |   2 +-
 bin/mkcatalog/parse.h                       |   2 +-
 bin/mkcatalog/ui.c                          |   2 +-
 bin/mkcatalog/ui.h                          |   2 +-
 bin/mkcatalog/upperlimit.c                  |   2 +-
 bin/mkcatalog/upperlimit.h                  |   2 +-
 bin/mknoise/Makefile.am                     |   2 +-
 bin/mknoise/args.h                          |   2 +-
 bin/mknoise/authors-cite.h                  |   2 +-
 bin/mknoise/main.c                          |   2 +-
 bin/mknoise/main.h                          |   2 +-
 bin/mknoise/mknoise.c                       |   2 +-
 bin/mknoise/mknoise.h                       |   2 +-
 bin/mknoise/ui.c                            |   2 +-
 bin/mknoise/ui.h                            |   2 +-
 bin/mkprof/Makefile.am                      |   2 +-
 bin/mkprof/args.h                           |   2 +-
 bin/mkprof/authors-cite.h                   |   2 +-
 bin/mkprof/main.c                           |   2 +-
 bin/mkprof/main.h                           |   2 +-
 bin/mkprof/mkprof.c                         |   2 +-
 bin/mkprof/mkprof.h                         |   2 +-
 bin/mkprof/oneprofile.c                     |   2 +-
 bin/mkprof/oneprofile.h                     |   2 +-
 bin/mkprof/profiles.c                       |   2 +-
 bin/mkprof/profiles.h                       |   2 +-
 bin/mkprof/ui.c                             |   2 +-
 bin/mkprof/ui.h                             |   2 +-
 bin/noisechisel/Makefile.am                 |   2 +-
 bin/noisechisel/args.h                      |   2 +-
 bin/noisechisel/authors-cite.h              |   2 +-
 bin/noisechisel/detection.c                 |   2 +-
 bin/noisechisel/detection.h                 |   2 +-
 bin/noisechisel/kernel-2d.h                 |   2 +-
 bin/noisechisel/main.c                      |   2 +-
 bin/noisechisel/main.h                      |   2 +-
 bin/noisechisel/noisechisel.c               |   2 +-
 bin/noisechisel/noisechisel.h               |   2 +-
 bin/noisechisel/sky.c                       |   2 +-
 bin/noisechisel/sky.h                       |   2 +-
 bin/noisechisel/threshold.c                 |   2 +-
 bin/noisechisel/threshold.h                 |   2 +-
 bin/noisechisel/ui.c                        |   2 +-
 bin/noisechisel/ui.h                        |   2 +-
 bin/segment/Makefile.am                     |   2 +-
 bin/segment/args.h                          |   2 +-
 bin/segment/authors-cite.h                  |   2 +-
 bin/segment/clumps.c                        |   2 +-
 bin/segment/clumps.h                        |   2 +-
 bin/segment/kernel-2d.h                     |   2 +-
 bin/segment/main.c                          |   2 +-
 bin/segment/main.h                          |   2 +-
 bin/segment/segment.c                       |   2 +-
 bin/segment/segment.h                       |   2 +-
 bin/segment/ui.c                            |   2 +-
 bin/segment/ui.h                            |   2 +-
 bin/statistics/Makefile.am                  |   2 +-
 bin/statistics/args.h                       |   2 +-
 bin/statistics/authors-cite.h               |   2 +-
 bin/statistics/main.c                       |   2 +-
 bin/statistics/main.h                       |   2 +-
 bin/statistics/sky.c                        |   2 +-
 bin/statistics/sky.h                        |   2 +-
 bin/statistics/statistics.c                 |   2 +-
 bin/statistics/statistics.h                 |   2 +-
 bin/statistics/ui.c                         |   2 +-
 bin/statistics/ui.h                         |   2 +-
 bin/table/Makefile.am                       |   2 +-
 bin/table/args.h                            |   2 +-
 bin/table/authors-cite.h                    |   2 +-
 bin/table/main.c                            |   2 +-
 bin/table/main.h                            |   2 +-
 bin/table/table.c                           |   2 +-
 bin/table/table.h                           |   2 +-
 bin/table/ui.c                              |   2 +-
 bin/table/ui.h                              |   2 +-
 bin/warp/Makefile.am                        |   2 +-
 bin/warp/args.h                             |   2 +-
 bin/warp/authors-cite.h                     |   2 +-
 bin/warp/main.c                             |   2 +-
 bin/warp/main.h                             |   2 +-
 bin/warp/ui.c                               |   2 +-
 bin/warp/ui.h                               |   2 +-
 bin/warp/warp.c                             |   2 +-
 bin/warp/warp.h                             |   2 +-
 bootstrap                                   |  27 ++-
 bootstrap.conf                              |   2 +-
 configure.ac                                |   4 +-
 developer-build                             |   2 +-
 doc/Makefile.am                             |   2 +-
 doc/announce-acknowledge.txt                |  10 --
 doc/fonts.css                               |   2 +-
 doc/forwebpage                              |   2 +-
 doc/genauthors                              |   2 +-
 doc/gnuastro.en.html                        |   8 +-
 doc/gnuastro.fr.html                        |   8 +-
 doc/gnuastro.texi                           | 191 +++++++++++++++++---
 doc/plotsrc/Makefile                        |   2 +-
 doc/plotsrc/all.tex                         |   2 +-
 doc/plotsrc/conversions.sh                  |   2 +-
 doc/plotsrc/tex/flatplane.tex               |   2 +-
 doc/plotsrc/tex/iandtime.tex                |   2 +-
 doc/plotsrc/tex/samplingfreq.tex            |   2 +-
 doc/plotsrc/tex/sphereandplane.tex          |   2 +-
 doc/release-checklist.txt                   |  22 ++-
 doc/style.css                               |   2 +-
 genauthors                                  |   2 +-
 lib/Makefile.am                             |   2 +-
 lib/arithmetic-and.c                        |   2 +-
 lib/arithmetic-bitand.c                     |   2 +-
 lib/arithmetic-bitlsh.c                     |   2 +-
 lib/arithmetic-bitor.c                      |   2 +-
 lib/arithmetic-bitrsh.c                     |   2 +-
 lib/arithmetic-bitxor.c                     |   2 +-
 lib/arithmetic-divide.c                     |   2 +-
 lib/arithmetic-eq.c                         |   2 +-
 lib/arithmetic-ge.c                         |   2 +-
 lib/arithmetic-gt.c                         |   2 +-
 lib/arithmetic-le.c                         |   2 +-
 lib/arithmetic-lt.c                         |   2 +-
 lib/arithmetic-minus.c                      |   2 +-
 lib/arithmetic-modulo.c                     |   2 +-
 lib/arithmetic-multiply.c                   |   2 +-
 lib/arithmetic-ne.c                         |   2 +-
 lib/arithmetic-or.c                         |   2 +-
 lib/arithmetic-plus.c                       |   2 +-
 lib/arithmetic.c                            |   2 +-
 lib/array.c                                 |   2 +-
 lib/binary.c                                |   2 +-
 lib/blank.c                                 |   2 +-
 lib/box.c                                   |   2 +-
 lib/checkset.c                              |   2 +-
 lib/convolve.c                              |   4 +-
 lib/cosmology.c                             |   2 +-
 lib/data.c                                  |   2 +-
 lib/dimension.c                             |   2 +-
 lib/eps.c                                   |   2 +-
 lib/fits.c                                  |  22 ++-
 lib/git.c                                   |   2 +-
 lib/gnuastro-internal/arithmetic-and.h      |   2 +-
 lib/gnuastro-internal/arithmetic-binary.h   |   2 +-
 lib/gnuastro-internal/arithmetic-bitand.h   |   2 +-
 lib/gnuastro-internal/arithmetic-bitlsh.h   |   2 +-
 lib/gnuastro-internal/arithmetic-bitor.h    |   2 +-
 lib/gnuastro-internal/arithmetic-bitrsh.h   |   2 +-
 lib/gnuastro-internal/arithmetic-bitxor.h   |   2 +-
 lib/gnuastro-internal/arithmetic-divide.h   |   2 +-
 lib/gnuastro-internal/arithmetic-eq.h       |   2 +-
 lib/gnuastro-internal/arithmetic-ge.h       |   2 +-
 lib/gnuastro-internal/arithmetic-gt.h       |   2 +-
 lib/gnuastro-internal/arithmetic-internal.h |   2 +-
 lib/gnuastro-internal/arithmetic-le.h       |   2 +-
 lib/gnuastro-internal/arithmetic-lt.h       |   2 +-
 lib/gnuastro-internal/arithmetic-minus.h    |   2 +-
 lib/gnuastro-internal/arithmetic-modulo.h   |   2 +-
 lib/gnuastro-internal/arithmetic-multiply.h |   2 +-
 lib/gnuastro-internal/arithmetic-ne.h       |   2 +-
 lib/gnuastro-internal/arithmetic-or.h       |   2 +-
 lib/gnuastro-internal/arithmetic-plus.h     |   2 +-
 lib/gnuastro-internal/checkset.h            |   2 +-
 lib/gnuastro-internal/commonopts.h          |   2 +-
 lib/gnuastro-internal/config.h.in           |   2 +-
 lib/gnuastro-internal/fixedstringmacros.h   |   4 +-
 lib/gnuastro-internal/options.h             |   2 +-
 lib/gnuastro-internal/tableintern.h         |   2 +-
 lib/gnuastro-internal/tile-internal.h       |   2 +-
 lib/gnuastro-internal/timing.h              |   2 +-
 lib/gnuastro/arithmetic.h                   |   2 +-
 lib/gnuastro/array.h                        |   2 +-
 lib/gnuastro/binary.h                       |   2 +-
 lib/gnuastro/blank.h                        |  10 +-
 lib/gnuastro/box.h                          |   2 +-
 lib/gnuastro/convolve.h                     |   2 +-
 lib/gnuastro/cosmology.h                    |   2 +-
 lib/gnuastro/data.h                         |   2 +-
 lib/gnuastro/dimension.h                    |   2 +-
 lib/gnuastro/eps.h                          |   2 +-
 lib/gnuastro/fits.h                         |   2 +-
 lib/gnuastro/git.h                          |   2 +-
 lib/gnuastro/interpolate.h                  |   2 +-
 lib/gnuastro/jpeg.h                         |   2 +-
 lib/gnuastro/label.h                        |   2 +-
 lib/gnuastro/list.h                         |   2 +-
 lib/gnuastro/match.h                        |   2 +-
 lib/gnuastro/pdf.h                          |   2 +-
 lib/gnuastro/permutation.h                  |   2 +-
 lib/gnuastro/pointer.h                      |   2 +-
 lib/gnuastro/polygon.h                      |   2 +-
 lib/gnuastro/qsort.h                        |   2 +-
 lib/gnuastro/statistics.h                   |   2 +-
 lib/gnuastro/table.h                        |   2 +-
 lib/gnuastro/threads.h                      |   2 +-
 lib/gnuastro/tiff.h                         |   2 +-
 lib/gnuastro/tile.h                         |   2 +-
 lib/gnuastro/txt.h                          |   2 +-
 lib/gnuastro/type.h                         |   2 +-
 lib/gnuastro/wcs.h                          |   2 +-
 lib/interpolate.c                           |   2 +-
 lib/jpeg.c                                  |   2 +-
 lib/label.c                                 |   2 +-
 lib/list.c                                  |   2 +-
 lib/match.c                                 |   2 +-
 lib/options.c                               |   2 +-
 lib/pdf.c                                   |   2 +-
 lib/permutation.c                           |   2 +-
 lib/pointer.c                               |   2 +-
 lib/polygon.c                               |   2 +-
 lib/qsort.c                                 |   2 +-
 lib/statistics.c                            |   2 +-
 lib/table.c                                 |   2 +-
 lib/tableintern.c                           |   2 +-
 lib/threads.c                               |   2 +-
 lib/tiff.c                                  |   2 +-
 lib/tile-internal.c                         |   2 +-
 lib/tile.c                                  |   2 +-
 lib/timing.c                                |   2 +-
 lib/txt.c                                   |   2 +-
 lib/type.c                                  |   2 +-
 lib/wcs.c                                   |   2 +-
 tests/Makefile.am                           |   2 +-
 tests/buildprog/simpleio.c                  |   2 +-
 tests/during-dev.sh                         |   2 +-
 tests/lib/multithread.c                     |   2 +-
 tests/lib/versioncxx.cpp                    |   2 +-
 tests/prepconf.sh                           |   2 +-
 330 files changed, 1032 insertions(+), 471 deletions(-)

diff --git a/Makefile.am b/Makefile.am
index 6928071..bdca796 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -6,7 +6,7 @@
 ## Original author:
 ##     Mohammad Akhlaghi <mohammad@akhlaghi.org>
 ## Contributing author(s):
-## Copyright (C) 2015-2018, Free Software Foundation, Inc.
+## Copyright (C) 2015-2019, Free Software Foundation, Inc.
 ##
 ## Gnuastro is free software: you can redistribute it and/or modify it
 ## under the terms of the GNU General Public License as published by
diff --git a/NEWS b/NEWS
index 8ddb577..6ec5a75 100644
--- a/NEWS
+++ b/NEWS
@@ -1,9 +1,44 @@
 GNU Astronomy Utilities NEWS                          -*- outline -*-
 
+
 * Noteworthy changes in release X.X (library X.X.X) (YYYY-MM-DD) [stable]
 
 ** New features
 
+  Fits:
+   - Add "title" to group FITS keywords with `--write=/,"title name". This
+     "title" is composed of two keyword records: a blank one, followed by
+     another starting with `/' and ending in any string given to this
+     option. Classifying the keywords into contextually similar groups
+     greatly helps in visual inspection and is ecouraged.
+   - Calculate and write `CHECKSUM' and `DATASUM' integrity keywords into
+     the specified header using `--write=checksum' (for both) or
+     `--write=datasum' (only for `DATASUM').
+   --verify: confirm if the `DATASUM' and `CHECKSUM' keyword values agree
+     with the specified HDU's content and/or data.
+   --copykeys: Copy several keyword records (in a given range) from one
+     FITS HDU/extension into another (possibly in another file).
+   --outhdu: The name/number of the output HDU (for `--copykeys').
+
+  Library:
+    GAL_BLANK_LONG: new macro for the `long' type blank value.
+    GAL_BLANK_ULONG: new macro for the `unsigned long' type blank value.
+
+** Removed features
+
+** Changed features
+
+** Bugs fixed
+  bug #55313: Fits program writing --write values in reverse order
+  bug #55333: Fits program crash when --write or --update have no value.
+
+
+
+
+* Noteworthy changes in release 0.8 (library 6.0.0) (2018-12-28) [stable]
+
+** New features
+
   All programs:
    - Input files and parameters written as keywords in the first extension
      of output when it is FITS. This is only relevant for some programs,
@@ -11,7 +46,7 @@ GNU Astronomy Utilities NEWS                          -*- 
outline -*-
    - Standard input (for example from pipes) is now available to feed input
      to all programs that accept plain text input (ConvertType, Convolve,
      Match, MakeProfiles, Statistics, Table).
-   - Updated acknowledgement statement (output of `--cite' option).
+   - Updated acknowledgment statement (output of `--cite' option).
 
   Arithmetic:
     --onedasimage: write output as an image if it has one dimension, not table.
diff --git a/THANKS b/THANKS
index a0b6ef3..6f34d21 100644
--- a/THANKS
+++ b/THANKS
@@ -87,8 +87,7 @@ Institutions
 
 Host institutions of Gnuastro's developers.
 
-    Ministry of education, culture, sports, science and technology, Japan.
-    Tohoku University, Sendai, Japan.
+    Tohoku University Astronomical Institute, Sendai, Japan.
     University of Salento, Lecce, Italy.
-    Centre de Recherche Astrophysique de Lyon, France
-    Centre national de la recherche scientifique, France
+    Centre de Recherche Astrophysique de Lyon (CRAL), Lyon, France.
+    Instituto de Astrofisica de Canarias (IAC), Tenerife, Spain.
diff --git a/bin/TEMPLATE/Makefile.am b/bin/TEMPLATE/Makefile.am
index c790ed0..bab4ad9 100644
--- a/bin/TEMPLATE/Makefile.am
+++ b/bin/TEMPLATE/Makefile.am
@@ -3,7 +3,7 @@
 ## Original author:
 ##     Mohammad akhlaghi <mohammad@akhlaghi.org>
 ## Contributing author(s):
-## Copyright (C) 2016-2018, Free Software Foundation, Inc.
+## Copyright (C) 2016-2019, Free Software Foundation, Inc.
 ##
 ## Gnuastro is free software: you can redistribute it and/or modify it
 ## under the terms of the GNU General Public License as published by
diff --git a/bin/TEMPLATE/TEMPLATE.c b/bin/TEMPLATE/TEMPLATE.c
index 912b646..69108aa 100644
--- a/bin/TEMPLATE/TEMPLATE.c
+++ b/bin/TEMPLATE/TEMPLATE.c
@@ -5,7 +5,7 @@ TEMPLATE is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2016-2018, Free Software Foundation, Inc.
+Copyright (C) 2016-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/TEMPLATE/TEMPLATE.h b/bin/TEMPLATE/TEMPLATE.h
index 5f5e662..e75f578 100644
--- a/bin/TEMPLATE/TEMPLATE.h
+++ b/bin/TEMPLATE/TEMPLATE.h
@@ -5,7 +5,7 @@ TEMPLATE is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2016-2018, Free Software Foundation, Inc.
+Copyright (C) 2016-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/TEMPLATE/args.h b/bin/TEMPLATE/args.h
index e4ae3eb..0568f0a 100644
--- a/bin/TEMPLATE/args.h
+++ b/bin/TEMPLATE/args.h
@@ -5,7 +5,7 @@ TEMPLATE is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2016-2018, Free Software Foundation, Inc.
+Copyright (C) 2016-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/TEMPLATE/authors-cite.h b/bin/TEMPLATE/authors-cite.h
index 607abde..9090793 100644
--- a/bin/TEMPLATE/authors-cite.h
+++ b/bin/TEMPLATE/authors-cite.h
@@ -5,7 +5,7 @@ TEMPLATE is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2016-2018, Free Software Foundation, Inc.
+Copyright (C) 2016-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/TEMPLATE/main.c b/bin/TEMPLATE/main.c
index a7c450c..22757cb 100644
--- a/bin/TEMPLATE/main.c
+++ b/bin/TEMPLATE/main.c
@@ -5,7 +5,7 @@ TEMPLATE is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2016-2018, Free Software Foundation, Inc.
+Copyright (C) 2016-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/TEMPLATE/main.h b/bin/TEMPLATE/main.h
index 9a46115..c3f8a08 100644
--- a/bin/TEMPLATE/main.h
+++ b/bin/TEMPLATE/main.h
@@ -5,7 +5,7 @@ TEMPLATE is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2016-2018, Free Software Foundation, Inc.
+Copyright (C) 2016-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/TEMPLATE/ui.c b/bin/TEMPLATE/ui.c
index 10a5886..7d888b7 100644
--- a/bin/TEMPLATE/ui.c
+++ b/bin/TEMPLATE/ui.c
@@ -5,7 +5,7 @@ TEMPLATE is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2016-2018, Free Software Foundation, Inc.
+Copyright (C) 2016-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/TEMPLATE/ui.h b/bin/TEMPLATE/ui.h
index 163bf42..342508e 100644
--- a/bin/TEMPLATE/ui.h
+++ b/bin/TEMPLATE/ui.h
@@ -5,7 +5,7 @@ TEMPLATE is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2016-2018, Free Software Foundation, Inc.
+Copyright (C) 2016-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/arithmetic/Makefile.am b/bin/arithmetic/Makefile.am
index 6dbc3e6..6d562d8 100644
--- a/bin/arithmetic/Makefile.am
+++ b/bin/arithmetic/Makefile.am
@@ -3,7 +3,7 @@
 ## Original author:
 ##     Mohammad Akhlaghi <mohammad@akhlaghi.org>
 ## Contributing author(s):
-## Copyright (C) 2015-2018, Free Software Foundation, Inc.
+## Copyright (C) 2015-2019, Free Software Foundation, Inc.
 ##
 ## Gnuastro is free software: you can redistribute it and/or modify it
 ## under the terms of the GNU General Public License as published by
diff --git a/bin/arithmetic/args.h b/bin/arithmetic/args.h
index ff55ef2..1ef24dd 100644
--- a/bin/arithmetic/args.h
+++ b/bin/arithmetic/args.h
@@ -5,7 +5,7 @@ Arithmetic is part of GNU Astronomy Utilities (Gnuastro) 
package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2015-2018, Free Software Foundation, Inc.
+Copyright (C) 2015-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/arithmetic/arithmetic.c b/bin/arithmetic/arithmetic.c
index 143ebd4..a827db7 100644
--- a/bin/arithmetic/arithmetic.c
+++ b/bin/arithmetic/arithmetic.c
@@ -5,7 +5,7 @@ Arithmetic is part of GNU Astronomy Utilities (Gnuastro) 
package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2015-2018, Free Software Foundation, Inc.
+Copyright (C) 2015-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/arithmetic/arithmetic.h b/bin/arithmetic/arithmetic.h
index 4aef527..7132f41 100644
--- a/bin/arithmetic/arithmetic.h
+++ b/bin/arithmetic/arithmetic.h
@@ -5,7 +5,7 @@ Arithmetic is part of GNU Astronomy Utilities (Gnuastro) 
package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2015-2018, Free Software Foundation, Inc.
+Copyright (C) 2015-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/arithmetic/authors-cite.h b/bin/arithmetic/authors-cite.h
index b6b7a50..deb0bec 100644
--- a/bin/arithmetic/authors-cite.h
+++ b/bin/arithmetic/authors-cite.h
@@ -5,7 +5,7 @@ Arithmetic is part of GNU Astronomy Utilities (Gnuastro) 
package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2017-2018, Free Software Foundation, Inc.
+Copyright (C) 2017-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/arithmetic/main.c b/bin/arithmetic/main.c
index eddbc57..ff9da8b 100644
--- a/bin/arithmetic/main.c
+++ b/bin/arithmetic/main.c
@@ -5,7 +5,7 @@ Arithmetic is part of GNU Astronomy Utilities (Gnuastro) 
package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2015-2018, Free Software Foundation, Inc.
+Copyright (C) 2015-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/arithmetic/main.h b/bin/arithmetic/main.h
index 48512d1..2d30c32 100644
--- a/bin/arithmetic/main.h
+++ b/bin/arithmetic/main.h
@@ -5,7 +5,7 @@ Arithmetic is part of GNU Astronomy Utilities (Gnuastro) 
package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2015-2018, Free Software Foundation, Inc.
+Copyright (C) 2015-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/arithmetic/operands.c b/bin/arithmetic/operands.c
index 2a00a29..b1062f5 100644
--- a/bin/arithmetic/operands.c
+++ b/bin/arithmetic/operands.c
@@ -5,7 +5,7 @@ Arithmetic is part of GNU Astronomy Utilities (Gnuastro) 
package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2015-2018, Free Software Foundation, Inc.
+Copyright (C) 2015-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/arithmetic/operands.h b/bin/arithmetic/operands.h
index e784f6d..fcf6453 100644
--- a/bin/arithmetic/operands.h
+++ b/bin/arithmetic/operands.h
@@ -5,7 +5,7 @@ Arithmetic is part of GNU Astronomy Utilities (Gnuastro) 
package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2015-2018, Free Software Foundation, Inc.
+Copyright (C) 2015-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/arithmetic/ui.c b/bin/arithmetic/ui.c
index 61075cc..bf41d96 100644
--- a/bin/arithmetic/ui.c
+++ b/bin/arithmetic/ui.c
@@ -5,7 +5,7 @@ Arithmetic is part of GNU Astronomy Utilities (Gnuastro) 
package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2015-2018, Free Software Foundation, Inc.
+Copyright (C) 2015-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/arithmetic/ui.h b/bin/arithmetic/ui.h
index c4fed45..6ee011a 100644
--- a/bin/arithmetic/ui.h
+++ b/bin/arithmetic/ui.h
@@ -5,7 +5,7 @@ Arithmetic is part of GNU Astronomy Utilities (Gnuastro) 
package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2015-2018, Free Software Foundation, Inc.
+Copyright (C) 2015-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/buildprog/Makefile.am b/bin/buildprog/Makefile.am
index 3f8f33e..fa4f1c5 100644
--- a/bin/buildprog/Makefile.am
+++ b/bin/buildprog/Makefile.am
@@ -3,7 +3,7 @@
 ## Original author:
 ##     Mohammad Akhlaghi <mohammad@akhlaghi.org>
 ## Contributing author(s):
-## Copyright (C) 2017-2018, Free Software Foundation, Inc.
+## Copyright (C) 2017-2019, Free Software Foundation, Inc.
 ##
 ## Gnuastro is free software: you can redistribute it and/or modify it
 ## under the terms of the GNU General Public License as published by
diff --git a/bin/buildprog/args.h b/bin/buildprog/args.h
index 1a3387a..8607f4f 100644
--- a/bin/buildprog/args.h
+++ b/bin/buildprog/args.h
@@ -5,7 +5,7 @@ BuildProgram is part of GNU Astronomy Utilities (Gnuastro) 
package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2017-2018, Free Software Foundation, Inc.
+Copyright (C) 2017-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/buildprog/authors-cite.h b/bin/buildprog/authors-cite.h
index af25d0e..50b4df4 100644
--- a/bin/buildprog/authors-cite.h
+++ b/bin/buildprog/authors-cite.h
@@ -5,7 +5,7 @@ BuildProgram is part of GNU Astronomy Utilities (Gnuastro) 
package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2017-2018, Free Software Foundation, Inc.
+Copyright (C) 2017-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/buildprog/buildprog.c b/bin/buildprog/buildprog.c
index 298f86b..ef706a8 100644
--- a/bin/buildprog/buildprog.c
+++ b/bin/buildprog/buildprog.c
@@ -5,7 +5,7 @@ BuildProgram is part of GNU Astronomy Utilities (Gnuastro) 
package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2017-2018, Free Software Foundation, Inc.
+Copyright (C) 2017-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/buildprog/buildprog.h b/bin/buildprog/buildprog.h
index bd197a3..d6ba191 100644
--- a/bin/buildprog/buildprog.h
+++ b/bin/buildprog/buildprog.h
@@ -5,7 +5,7 @@ BuildProgram is part of GNU Astronomy Utilities (Gnuastro) 
package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2017-2018, Free Software Foundation, Inc.
+Copyright (C) 2017-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/buildprog/main.c b/bin/buildprog/main.c
index bca4682..b7b868f 100644
--- a/bin/buildprog/main.c
+++ b/bin/buildprog/main.c
@@ -5,7 +5,7 @@ BuildProgram is part of GNU Astronomy Utilities (Gnuastro) 
package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2017-2018, Free Software Foundation, Inc.
+Copyright (C) 2017-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/buildprog/main.h b/bin/buildprog/main.h
index 654799c..eb3ee1e 100644
--- a/bin/buildprog/main.h
+++ b/bin/buildprog/main.h
@@ -5,7 +5,7 @@ BuildProgram is part of GNU Astronomy Utilities (Gnuastro) 
package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2017-2018, Free Software Foundation, Inc.
+Copyright (C) 2017-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/buildprog/ui.c b/bin/buildprog/ui.c
index 8667aa5..edb12f3 100644
--- a/bin/buildprog/ui.c
+++ b/bin/buildprog/ui.c
@@ -5,7 +5,7 @@ BuildProgram is part of GNU Astronomy Utilities (Gnuastro) 
package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2017-2018, Free Software Foundation, Inc.
+Copyright (C) 2017-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/buildprog/ui.h b/bin/buildprog/ui.h
index 9089e84..0415117 100644
--- a/bin/buildprog/ui.h
+++ b/bin/buildprog/ui.h
@@ -5,7 +5,7 @@ BuildProgram is part of GNU Astronomy Utilities (Gnuastro) 
package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2017-2018, Free Software Foundation, Inc.
+Copyright (C) 2017-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/convertt/Makefile.am b/bin/convertt/Makefile.am
index 2199202..c5f6e76 100644
--- a/bin/convertt/Makefile.am
+++ b/bin/convertt/Makefile.am
@@ -3,7 +3,7 @@
 ## Original author:
 ##     Mohammad Akhlaghi <mohammad@akhlaghi.org>
 ## Contributing author(s):
-## Copyright (C) 2015-2018, Free Software Foundation, Inc.
+## Copyright (C) 2015-2019, Free Software Foundation, Inc.
 ##
 ## Gnuastro is free software: you can redistribute it and/or modify it
 ## under the terms of the GNU General Public License as published by
diff --git a/bin/convertt/args.h b/bin/convertt/args.h
index 39fedda..52f95d6 100644
--- a/bin/convertt/args.h
+++ b/bin/convertt/args.h
@@ -5,7 +5,7 @@ ConvertType is part of GNU Astronomy Utilities (Gnuastro) 
package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2016-2018, Free Software Foundation, Inc.
+Copyright (C) 2016-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/convertt/authors-cite.h b/bin/convertt/authors-cite.h
index e29a12d..7470718 100644
--- a/bin/convertt/authors-cite.h
+++ b/bin/convertt/authors-cite.h
@@ -5,7 +5,7 @@ ConvertType is part of GNU Astronomy Utilities (Gnuastro) 
package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2017-2018, Free Software Foundation, Inc.
+Copyright (C) 2017-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/convertt/color.c b/bin/convertt/color.c
index ac23269..a7419b4 100644
--- a/bin/convertt/color.c
+++ b/bin/convertt/color.c
@@ -5,7 +5,7 @@ ConvertType is part of GNU Astronomy Utilities (Gnuastro) 
package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2015-2018, Free Software Foundation, Inc.
+Copyright (C) 2015-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/convertt/color.h b/bin/convertt/color.h
index 252724b..1e329c5 100644
--- a/bin/convertt/color.h
+++ b/bin/convertt/color.h
@@ -5,7 +5,7 @@ ConvertType is part of GNU Astronomy Utilities (Gnuastro) 
package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2015-2018, Free Software Foundation, Inc.
+Copyright (C) 2015-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/convertt/convertt.c b/bin/convertt/convertt.c
index 692351c..0f22c08 100644
--- a/bin/convertt/convertt.c
+++ b/bin/convertt/convertt.c
@@ -5,7 +5,7 @@ ConvertType is part of GNU Astronomy Utilities (Gnuastro) 
package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2015-2018, Free Software Foundation, Inc.
+Copyright (C) 2015-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/convertt/convertt.h b/bin/convertt/convertt.h
index 80622d7..35f1ac8 100644
--- a/bin/convertt/convertt.h
+++ b/bin/convertt/convertt.h
@@ -5,7 +5,7 @@ ConvertType is part of GNU Astronomy Utilities (Gnuastro) 
package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2015-2018, Free Software Foundation, Inc.
+Copyright (C) 2015-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/convertt/main.c b/bin/convertt/main.c
index c59b7c7..06976c3 100644
--- a/bin/convertt/main.c
+++ b/bin/convertt/main.c
@@ -5,7 +5,7 @@ ConvertType is part of GNU Astronomy Utilities (Gnuastro) 
package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2015-2018, Free Software Foundation, Inc.
+Copyright (C) 2015-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/convertt/main.h b/bin/convertt/main.h
index cb462a0..efca953 100644
--- a/bin/convertt/main.h
+++ b/bin/convertt/main.h
@@ -5,7 +5,7 @@ ConvertType is part of GNU Astronomy Utilities (Gnuastro) 
package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2016-2018, Free Software Foundation, Inc.
+Copyright (C) 2016-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/convertt/ui.c b/bin/convertt/ui.c
index e2ca180..71bcc0d 100644
--- a/bin/convertt/ui.c
+++ b/bin/convertt/ui.c
@@ -5,7 +5,7 @@ ConvertType is part of GNU Astronomy Utilities (Gnuastro) 
package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2016-2018, Free Software Foundation, Inc.
+Copyright (C) 2016-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/convertt/ui.h b/bin/convertt/ui.h
index 5e91622..28a523e 100644
--- a/bin/convertt/ui.h
+++ b/bin/convertt/ui.h
@@ -5,7 +5,7 @@ ConvertType is part of GNU Astronomy Utilities (Gnuastro) 
package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2016-2018, Free Software Foundation, Inc.
+Copyright (C) 2016-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/convolve/Makefile.am b/bin/convolve/Makefile.am
index 88f2a34..72aeadd 100644
--- a/bin/convolve/Makefile.am
+++ b/bin/convolve/Makefile.am
@@ -3,7 +3,7 @@
 ## Original author:
 ##     Mohammad Akhlaghi <mohammad@akhlaghi.org>
 ## Contributing author(s):
-## Copyright (C) 2015-2018, Free Software Foundation, Inc.
+## Copyright (C) 2015-2019, Free Software Foundation, Inc.
 ##
 ## Gnuastro is free software: you can redistribute it and/or modify it
 ## under the terms of the GNU General Public License as published by
diff --git a/bin/convolve/args.h b/bin/convolve/args.h
index 8e03ea6..193b439 100644
--- a/bin/convolve/args.h
+++ b/bin/convolve/args.h
@@ -5,7 +5,7 @@ Convolve is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2015-2018, Free Software Foundation, Inc.
+Copyright (C) 2015-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/convolve/authors-cite.h b/bin/convolve/authors-cite.h
index b66af0d..4f842f5 100644
--- a/bin/convolve/authors-cite.h
+++ b/bin/convolve/authors-cite.h
@@ -5,7 +5,7 @@ Convolve is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2017-2018, Free Software Foundation, Inc.
+Copyright (C) 2017-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/convolve/convolve.c b/bin/convolve/convolve.c
index 4e05635..c374531 100644
--- a/bin/convolve/convolve.c
+++ b/bin/convolve/convolve.c
@@ -5,7 +5,7 @@ Convolve is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2015-2018, Free Software Foundation, Inc.
+Copyright (C) 2015-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/convolve/convolve.h b/bin/convolve/convolve.h
index 9bdb431..fcd4c67 100644
--- a/bin/convolve/convolve.h
+++ b/bin/convolve/convolve.h
@@ -5,7 +5,7 @@ Convolve is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2015-2018, Free Software Foundation, Inc.
+Copyright (C) 2015-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/convolve/main.c b/bin/convolve/main.c
index f317cc9..f2eb0c5 100644
--- a/bin/convolve/main.c
+++ b/bin/convolve/main.c
@@ -5,7 +5,7 @@ Convolve is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2015-2018, Free Software Foundation, Inc.
+Copyright (C) 2015-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/convolve/main.h b/bin/convolve/main.h
index f3b8812..5fca63c 100644
--- a/bin/convolve/main.h
+++ b/bin/convolve/main.h
@@ -5,7 +5,7 @@ Convolve is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2015-2018, Free Software Foundation, Inc.
+Copyright (C) 2015-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/convolve/ui.c b/bin/convolve/ui.c
index 0f43c11..ca8ce78 100644
--- a/bin/convolve/ui.c
+++ b/bin/convolve/ui.c
@@ -5,7 +5,7 @@ Convolve is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2015-2018, Free Software Foundation, Inc.
+Copyright (C) 2015-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/convolve/ui.h b/bin/convolve/ui.h
index 81e67f9..4e71766 100644
--- a/bin/convolve/ui.h
+++ b/bin/convolve/ui.h
@@ -5,7 +5,7 @@ Convolve is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2015-2018, Free Software Foundation, Inc.
+Copyright (C) 2015-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/cosmiccal/Makefile.am b/bin/cosmiccal/Makefile.am
index 480b94b..96cafdd 100644
--- a/bin/cosmiccal/Makefile.am
+++ b/bin/cosmiccal/Makefile.am
@@ -3,7 +3,7 @@
 ## Original author:
 ##     Mohammad Akhlaghi <mohammad@akhlaghi.org>
 ## Contributing author(s):
-## Copyright (C) 2016-2018, Free Software Foundation, Inc.
+## Copyright (C) 2016-2019, Free Software Foundation, Inc.
 ##
 ## Gnuastro is free software: you can redistribute it and/or modify it
 ## under the terms of the GNU General Public License as published by
diff --git a/bin/cosmiccal/args.h b/bin/cosmiccal/args.h
index 12d7c57..e7359cb 100644
--- a/bin/cosmiccal/args.h
+++ b/bin/cosmiccal/args.h
@@ -5,7 +5,7 @@ CosmicCalculator is part of GNU Astronomy Utilities (Gnuastro) 
package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2016-2018, Free Software Foundation, Inc.
+Copyright (C) 2016-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/cosmiccal/authors-cite.h b/bin/cosmiccal/authors-cite.h
index 879fa94..4ebebd6 100644
--- a/bin/cosmiccal/authors-cite.h
+++ b/bin/cosmiccal/authors-cite.h
@@ -5,7 +5,7 @@ CosmicCalculator is part of GNU Astronomy Utilities (Gnuastro) 
package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2017-2018, Free Software Foundation, Inc.
+Copyright (C) 2017-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/cosmiccal/cosmiccal.c b/bin/cosmiccal/cosmiccal.c
index 49a4929..2295e55 100644
--- a/bin/cosmiccal/cosmiccal.c
+++ b/bin/cosmiccal/cosmiccal.c
@@ -5,7 +5,7 @@ CosmicCalculator is part of GNU Astronomy Utilities (Gnuastro) 
package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2016-2018, Free Software Foundation, Inc.
+Copyright (C) 2016-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/cosmiccal/cosmiccal.h b/bin/cosmiccal/cosmiccal.h
index bf257d5..64ca8e0 100644
--- a/bin/cosmiccal/cosmiccal.h
+++ b/bin/cosmiccal/cosmiccal.h
@@ -5,7 +5,7 @@ CosmicCalculator is part of GNU Astronomy Utilities (Gnuastro) 
package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2016-2018, Free Software Foundation, Inc.
+Copyright (C) 2016-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/cosmiccal/main.c b/bin/cosmiccal/main.c
index 4eb3f03..5dcce1a 100644
--- a/bin/cosmiccal/main.c
+++ b/bin/cosmiccal/main.c
@@ -5,7 +5,7 @@ CosmicCalculator is part of GNU Astronomy Utilities (Gnuastro) 
package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2016-2018, Free Software Foundation, Inc.
+Copyright (C) 2016-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/cosmiccal/main.h b/bin/cosmiccal/main.h
index 7eac1a3..e6aff26 100644
--- a/bin/cosmiccal/main.h
+++ b/bin/cosmiccal/main.h
@@ -5,7 +5,7 @@ CosmicCalculator is part of GNU Astronomy Utilities (Gnuastro) 
package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2016-2018, Free Software Foundation, Inc.
+Copyright (C) 2016-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/cosmiccal/ui.c b/bin/cosmiccal/ui.c
index 6b60557..4b6263f 100644
--- a/bin/cosmiccal/ui.c
+++ b/bin/cosmiccal/ui.c
@@ -5,7 +5,7 @@ CosmicCalculator is part of GNU Astronomy Utilities (Gnuastro) 
package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2016-2018, Free Software Foundation, Inc.
+Copyright (C) 2016-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/cosmiccal/ui.h b/bin/cosmiccal/ui.h
index 4d449d6..f59a5c6 100644
--- a/bin/cosmiccal/ui.h
+++ b/bin/cosmiccal/ui.h
@@ -5,7 +5,7 @@ CosmicCalculator is part of GNU Astronomy Utilities (Gnuastro) 
package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2016-2018, Free Software Foundation, Inc.
+Copyright (C) 2016-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/crop/Makefile.am b/bin/crop/Makefile.am
index 12d1ad6..e6a86a2 100644
--- a/bin/crop/Makefile.am
+++ b/bin/crop/Makefile.am
@@ -3,7 +3,7 @@
 ## Original author:
 ##     Mohammad Akhlaghi <mohammad@akhlaghi.org>
 ## Contributing author(s):
-## Copyright (C) 2015-2018, Free Software Foundation, Inc.
+## Copyright (C) 2015-2019, Free Software Foundation, Inc.
 ##
 ## Gnuastro is free software: you can redistribute it and/or modify it
 ## under the terms of the GNU General Public License as published by
diff --git a/bin/crop/args.h b/bin/crop/args.h
index 3b8a6a7..27ab92d 100644
--- a/bin/crop/args.h
+++ b/bin/crop/args.h
@@ -5,7 +5,7 @@ Crop is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2016-2018, Free Software Foundation, Inc.
+Copyright (C) 2016-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/crop/authors-cite.h b/bin/crop/authors-cite.h
index b306f0e..b910952 100644
--- a/bin/crop/authors-cite.h
+++ b/bin/crop/authors-cite.h
@@ -5,7 +5,7 @@ Crop is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2017-2018, Free Software Foundation, Inc.
+Copyright (C) 2017-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/crop/crop.c b/bin/crop/crop.c
index 0336c93..3e19f71 100644
--- a/bin/crop/crop.c
+++ b/bin/crop/crop.c
@@ -5,7 +5,7 @@ Crop is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2015-2018, Free Software Foundation, Inc.
+Copyright (C) 2015-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/crop/crop.h b/bin/crop/crop.h
index 633e998..d9f6fd2 100644
--- a/bin/crop/crop.h
+++ b/bin/crop/crop.h
@@ -5,7 +5,7 @@ Crop is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2015-2018, Free Software Foundation, Inc.
+Copyright (C) 2015-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/crop/main.c b/bin/crop/main.c
index 5d3ee20..a303b3f 100644
--- a/bin/crop/main.c
+++ b/bin/crop/main.c
@@ -5,7 +5,7 @@ Crop is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2015-2018, Free Software Foundation, Inc.
+Copyright (C) 2015-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/crop/main.h b/bin/crop/main.h
index dd4e4fd..e60d1cc 100644
--- a/bin/crop/main.h
+++ b/bin/crop/main.h
@@ -5,7 +5,7 @@ Crop is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2016-2018, Free Software Foundation, Inc.
+Copyright (C) 2016-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/crop/onecrop.c b/bin/crop/onecrop.c
index 330a153..4e14bc8 100644
--- a/bin/crop/onecrop.c
+++ b/bin/crop/onecrop.c
@@ -5,7 +5,7 @@ Crop is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2015-2018, Free Software Foundation, Inc.
+Copyright (C) 2015-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
@@ -100,7 +100,7 @@ onecrop_parse_section(struct cropparams *p, size_t *dsize,
     }
 
 
-  /* Parse the string. */
+  /* Parse the string: `forl': "first-or-last". */
   while(*pt!='\0')
     {
       add=0;
diff --git a/bin/crop/onecrop.h b/bin/crop/onecrop.h
index b68d868..8c32101 100644
--- a/bin/crop/onecrop.h
+++ b/bin/crop/onecrop.h
@@ -5,7 +5,7 @@ Crop is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2015-2018, Free Software Foundation, Inc.
+Copyright (C) 2015-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/crop/ui.c b/bin/crop/ui.c
index de00c22..d0c9555 100644
--- a/bin/crop/ui.c
+++ b/bin/crop/ui.c
@@ -5,7 +5,7 @@ Crop is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2016-2018, Free Software Foundation, Inc.
+Copyright (C) 2016-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/crop/ui.h b/bin/crop/ui.h
index ff00ae4..de2cbae 100644
--- a/bin/crop/ui.h
+++ b/bin/crop/ui.h
@@ -5,7 +5,7 @@ Crop is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2016-2018, Free Software Foundation, Inc.
+Copyright (C) 2016-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/crop/wcsmode.c b/bin/crop/wcsmode.c
index 049cbc9..4fd0686 100644
--- a/bin/crop/wcsmode.c
+++ b/bin/crop/wcsmode.c
@@ -5,7 +5,7 @@ Crop is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2015-2018, Free Software Foundation, Inc.
+Copyright (C) 2015-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/crop/wcsmode.h b/bin/crop/wcsmode.h
index 7cb6d30..989a6e9 100644
--- a/bin/crop/wcsmode.h
+++ b/bin/crop/wcsmode.h
@@ -5,7 +5,7 @@ Crop is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2015-2018, Free Software Foundation, Inc.
+Copyright (C) 2015-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/fits/Makefile.am b/bin/fits/Makefile.am
index f7f998a..8d7d0e8 100644
--- a/bin/fits/Makefile.am
+++ b/bin/fits/Makefile.am
@@ -3,7 +3,7 @@
 ## Original author:
 ##     Mohammad Akhlaghi <mohammad@akhlaghi.org>
 ## Contributing author(s):
-## Copyright (C) 2015-2018, Free Software Foundation, Inc.
+## Copyright (C) 2015-2019, Free Software Foundation, Inc.
 ##
 ## Gnuastro is free software: you can redistribute it and/or modify it
 ## under the terms of the GNU General Public License as published by
diff --git a/bin/fits/args.h b/bin/fits/args.h
index 372c7c1..281a65b 100644
--- a/bin/fits/args.h
+++ b/bin/fits/args.h
@@ -5,7 +5,7 @@ Fits is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2016-2018, Free Software Foundation, Inc.
+Copyright (C) 2016-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
@@ -31,7 +31,7 @@ along with Gnuastro. If not, see 
<http://www.gnu.org/licenses/>.
 /* Array of acceptable options. */
 struct argp_option program_options[] =
   {
-
+    /* Input options */
     {
       0, 0, 0, 0,
       "HDUs (extensions):",
@@ -202,6 +202,19 @@ struct argp_option program_options[] =
       GAL_OPTIONS_NOT_SET
     },
     {
+      "verify",
+      UI_KEY_VERIFY,
+      0,
+      0,
+      "Verify the CHECKSUM and DATASUM keywords.",
+      UI_GROUP_KEYWORD,
+      &p->verify,
+      GAL_OPTIONS_NO_ARG_TYPE,
+      GAL_OPTIONS_RANGE_0_OR_1,
+      GAL_OPTIONS_NOT_MANDATORY,
+      GAL_OPTIONS_NOT_SET
+    },
+    {
       "printallkeys",
       UI_KEY_PRINTALLKEYS,
       0,
@@ -214,9 +227,42 @@ struct argp_option program_options[] =
       GAL_OPTIONS_NOT_MANDATORY,
       GAL_OPTIONS_NOT_SET
     },
+    {
+      "copykeys",
+      UI_KEY_COPYKEYS,
+      "STR",
+      0,
+      "Range of keywords to copy to output HDU.",
+      UI_GROUP_KEYWORD,
+      &p->copykeys,
+      GAL_TYPE_STRING,
+      GAL_OPTIONS_RANGE_ANY,
+      GAL_OPTIONS_NOT_MANDATORY,
+      GAL_OPTIONS_NOT_SET
+    },
+
+
+
+
+
+    /* Output options. */
+    {
+      "outhdu",
+      UI_KEY_OUTHDU,
+      "STR",
+      0,
+      "HDU/extension in output for --copykeys.",
+      GAL_OPTIONS_GROUP_OUTPUT,
+      &p->outhdu,
+      GAL_TYPE_STRING,
+      GAL_OPTIONS_RANGE_ANY,
+      GAL_OPTIONS_NOT_MANDATORY,
+      GAL_OPTIONS_NOT_SET
+    },
 
 
 
+    /* Operating mode options. */
     {
       "quitonerror",
       UI_KEY_QUITONERROR,
diff --git a/bin/fits/authors-cite.h b/bin/fits/authors-cite.h
index 8095131..9ae97d0 100644
--- a/bin/fits/authors-cite.h
+++ b/bin/fits/authors-cite.h
@@ -5,7 +5,7 @@ Fits is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2017-2018, Free Software Foundation, Inc.
+Copyright (C) 2017-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/fits/extension.c b/bin/fits/extension.c
index 864b8c6..b9325bc 100644
--- a/bin/fits/extension.c
+++ b/bin/fits/extension.c
@@ -5,7 +5,7 @@ Fits is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2017-2018, Free Software Foundation, Inc.
+Copyright (C) 2017-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/fits/extension.h b/bin/fits/extension.h
index 2b7115e..b54ff6a 100644
--- a/bin/fits/extension.h
+++ b/bin/fits/extension.h
@@ -5,7 +5,7 @@ Fits is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2017-2018, Free Software Foundation, Inc.
+Copyright (C) 2017-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/fits/fits.c b/bin/fits/fits.c
index 2c47eed..2220a9d 100644
--- a/bin/fits/fits.c
+++ b/bin/fits/fits.c
@@ -5,7 +5,7 @@ Fits is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2017-2018, Free Software Foundation, Inc.
+Copyright (C) 2017-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/fits/fits.h b/bin/fits/fits.h
index d54378e..06f461c 100644
--- a/bin/fits/fits.h
+++ b/bin/fits/fits.h
@@ -5,7 +5,7 @@ Fits is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2017-2018, Free Software Foundation, Inc.
+Copyright (C) 2017-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/fits/keywords.c b/bin/fits/keywords.c
index 366a5fc..c7e6fe2 100644
--- a/bin/fits/keywords.c
+++ b/bin/fits/keywords.c
@@ -5,7 +5,7 @@ Fits is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2015-2018, Free Software Foundation, Inc.
+Copyright (C) 2015-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
@@ -29,6 +29,7 @@ along with Gnuastro. If not, see 
<http://www.gnu.org/licenses/>.
 #include <stdlib.h>
 
 #include <gnuastro/fits.h>
+#include <gnuastro-internal/timing.h>
 
 #include <gnuastro-internal/checkset.h>
 
@@ -123,11 +124,63 @@ keywords_rename_keys(struct fitsparams *p, fitsfile 
**fptr, int *r)
 
 
 
+/* Special write options don't have any value and the value has to be found
+   within the script. */
+static int
+keywords_write_set_value(struct fitsparams *p, fitsfile **fptr,
+                         gal_fits_list_key_t *keyll)
+{
+  int status=0;
+
+  if( !strcasecmp(keyll->keyname,"checksum")
+      || !strcasecmp(keyll->keyname,"datasum") )
+    {
+      /* If a value is given, then just write what the user gave. */
+      if( keyll->value )
+        return 1;
+      else
+        {
+          /* Calculate and write the `CHECKSUM' and `DATASUM' keywords. */
+          if( fits_write_chksum(*fptr, &status) )
+            gal_fits_io_error(status, NULL);
+
+          /* If the user just wanted datasum, remove the checksum
+             keyword. */
+          if( !strcasecmp(keyll->keyname,"datasum") )
+            if( fits_delete_key(*fptr, "CHECKSUM", &status) )
+              gal_fits_io_error(status, NULL);
+
+          /* Inform the caller that everything is done. */
+          return 0;
+        }
+    }
+  else if( keyll->keyname[0]=='/' )
+    {
+      gal_fits_key_write_title_in_ptr(keyll->value, *fptr);
+      return 0;
+    }
+  else
+    error(EXIT_FAILURE, 0, "%s: a bug! Please contact us at %s to "
+          "fix the problem. The `keyname' value `%s' is not "
+          "recognized as one with no value", __func__,
+          PACKAGE_BUGREPORT, keyll->keyname);
+
+  /* Function should not reach here. */
+  error(EXIT_FAILURE, 0, "%s: a bug! Please contact us at %s to fix this "
+        "problem. Control should not reach the end of this function",
+        __func__, PACKAGE_BUGREPORT);
+  return 0;
+}
+
+
+
+
+
 static void
 keywords_write_update(struct fitsparams *p, fitsfile **fptr,
                       gal_fits_list_key_t *keyll, int u1w2)
 {
-  int status=0;
+  int status=0, continuewriting=0;
   gal_fits_list_key_t *tmp;
 
   /* Open the FITS file if it hasn't been opened yet. */
@@ -136,54 +189,63 @@ keywords_write_update(struct fitsparams *p, fitsfile 
**fptr,
   /* Go through each key and write it in the FITS file. */
   while(keyll!=NULL)
     {
+      /* Deal with special keywords. */
+      continuewriting=1;
+      if( keyll->value==NULL || keyll->keyname[0]=='/' )
+        continuewriting=keywords_write_set_value(p, fptr, keyll);
+
       /* Write the information: */
-      if(u1w2==1)
+      if(continuewriting)
         {
-          if(keyll->value)
+          if(u1w2==1)
             {
-              if( fits_update_key(*fptr,
-                                  gal_fits_type_to_datatype(keyll->type),
-                                  keyll->keyname, keyll->value,
-                                  keyll->comment, &status) )
-                gal_fits_io_error(status, NULL);
-            }
-          else
-            {
-              if(fits_write_key_null(*fptr, keyll->keyname, keyll->comment,
-                                     &status))
-                gal_fits_io_error(status, NULL);
+              if(keyll->value)
+                {
+                  if( fits_update_key(*fptr,
+                                      gal_fits_type_to_datatype(keyll->type),
+                                      keyll->keyname, keyll->value,
+                                      keyll->comment, &status) )
+                    gal_fits_io_error(status, NULL);
+                }
+              else
+                {
+                  if(fits_write_key_null(*fptr, keyll->keyname,
+                                         keyll->comment, &status))
+                    gal_fits_io_error(status, NULL);
+                }
             }
-        }
-      else if (u1w2==2)
-        {
-          if(keyll->value)
+          else if (u1w2==2)
             {
-              if( fits_write_key(*fptr,
-                                 gal_fits_type_to_datatype(keyll->type),
-                                 keyll->keyname, keyll->value, keyll->comment,
-                                 &status) )
+              if(keyll->value)
+                {
+                  if( fits_write_key(*fptr,
+                                     gal_fits_type_to_datatype(keyll->type),
+                                     keyll->keyname, keyll->value,
+                                     keyll->comment, &status) )
+                    gal_fits_io_error(status, NULL);
+                }
+              else
+                {
+                  if(fits_write_key_null(*fptr, keyll->keyname,
+                                         keyll->comment, &status))
+                    gal_fits_io_error(status, NULL);
+                }
+              if(keyll->unit
+                 && fits_write_key_unit(*fptr, keyll->keyname, keyll->unit,
+                                        &status) )
                 gal_fits_io_error(status, NULL);
             }
           else
-            {
-              if(fits_write_key_null(*fptr, keyll->keyname, keyll->comment,
-                                     &status))
-                gal_fits_io_error(status, NULL);
-            }
+            error(EXIT_FAILURE, 0, "%s: a bug! Please contact us at `%s' so "
+                  "we can fix this problem. The value %d is not valid for "
+                  "`u1w2'", __func__, PACKAGE_BUGREPORT, u1w2);
+
+          /* Add the unit (if one was given). */
           if(keyll->unit
              && fits_write_key_unit(*fptr, keyll->keyname, keyll->unit,
                                     &status) )
             gal_fits_io_error(status, NULL);
         }
-      else
-        error(EXIT_FAILURE, 0, "%s: a bug! Please contact us at `%s' so we "
-              "can fix this problem. The value %d is not valid for `u1w2'",
-              __func__, PACKAGE_BUGREPORT, u1w2);
-
-      /* Add the unit (if one was given). */
-      if(keyll->unit
-         && fits_write_key_unit(*fptr, keyll->keyname, keyll->unit, &status) )
-        gal_fits_io_error(status, NULL);
 
       /* Free the allocated spaces if necessary: */
       if(keyll->vfree) free(keyll->value);
@@ -237,6 +299,104 @@ keywords_print_all_keys(struct fitsparams *p, fitsfile 
**fptr)
 
 
 
+static int
+keywords_verify(struct fitsparams *p, fitsfile **fptr)
+{
+  int dataok, hduok, status=0;
+
+  /* Ask CFITSIO to verify the two keywords. */
+  if( fits_verify_chksum(*fptr, &dataok, &hduok, &status) )
+    gal_fits_io_error(status, NULL);
+
+  /* Print some introduction: */
+  if(!p->cp.quiet)
+    printf("%s\n"
+           "Checking integrity of %s (hdu %s)\n"
+           "%s"
+           "--------\n"
+           "Basic info (remove all extra info with `--quiet'):\n"
+           "    - DATASUM: verifies only the data (not keywords).\n"
+           "    - CHECKSUM: verifies data and keywords.\n"
+           "They can be added-to/updated-in an extension/HDU with:\n"
+           "    $ astfits %s -h%s --write=checksum\n"
+           "--------\n", PROGRAM_STRING, p->filename, p->cp.hdu,
+           ctime(&p->rawtime), p->filename, p->cp.hdu);
+
+  /* Print the verification result. */
+  printf("DATASUM:  %s\n",
+         dataok==1 ? "Verified" : (dataok==0 ? "NOT-PRESENT" : "INCORRECT"));
+  printf("CHECKSUM: %s\n",
+         hduok==1  ? "Verified" : (hduok==0  ? "NOT-PRESENT" : "INCORRECT"));
+
+  /* Return failure if any of the keywords are not verified. */
+  return (dataok==-1 || hduok==-1) ? EXIT_FAILURE : EXIT_SUCCESS;
+}
+
+
+
+
+
+
+static void
+keywords_copykeys(struct fitsparams *p, char *inkeys, size_t numinkeys)
+{
+  size_t i;
+  int status=0;
+  long initial;
+  fitsfile *fptr;
+
+  /* Initial sanity check. Since `numinkeys' includes `END' (counting from
+     1, as we do here), the first keyword must not be larger OR EQUAL to
+     `numinkeys'. */
+  if(p->copykeysrange[0]>=numinkeys)
+    error(EXIT_FAILURE, 0, "%s (hdu %s): first keyword number give to "
+          "`--copykeys' (%ld) is larger than the number of keywords in this "
+          "header (%ld, including the `END' keyword)", p->filename, p->cp.hdu,
+          p->copykeysrange[0], numinkeys);
+
+  /* If the user wanted to count from the end (by giving a negative value),
+     then do that. */
+  if(p->copykeysrange[1]<0)
+    {
+      /* Set the last keyword requested. */
+      initial=p->copykeysrange[1];
+      p->copykeysrange[1] += numinkeys;
+
+      /* Sanity check. */
+      if(p->copykeysrange[0]>=p->copykeysrange[1])
+        error(EXIT_FAILURE, 0, "%s (hdu %s): the last keyword given to "
+              "`--copykeys' (%ld, or %ld after counting from the bottom) "
+              "is earlier than the first (%ld)", p->filename, p->cp.hdu,
+              initial, p->copykeysrange[1], p->copykeysrange[0]);
+    }
+
+  /* Final sanity check (on range limit). */
+  if(p->copykeysrange[1]>=numinkeys)
+    error(EXIT_FAILURE, 0, "%s (hdu %s): second keyword number give to "
+          "`--copykeys' (%ld) is larger than the number of keywords in this "
+          "header (%ld, including the `END' keyword)", p->filename, p->cp.hdu,
+          p->copykeysrange[1], numinkeys);
+
+
+  /* Open the output HDU. */
+  fptr=gal_fits_hdu_open(p->cp.output, p->outhdu, READWRITE);
+
+
+  /* Copy the requested headers into the output. */
+  for(i=p->copykeysrange[0]-1; i<=p->copykeysrange[1]-1; ++i)
+    if( fits_write_record(fptr, &inkeys[i*80], &status ) )
+      gal_fits_io_error(status, NULL);
+
+  /* Close the output FITS file. */
+  status=0;
+  if(fits_close_file(fptr, &status))
+    gal_fits_io_error(status, NULL);
+}
+
+
+
+
+
 
 
 
@@ -267,10 +427,11 @@ keywords_print_all_keys(struct fitsparams *p, fitsfile 
**fptr)
 int
 keywords(struct fitsparams *p)
 {
-  int status=0;
+  char *inkeys=NULL;
   int r=EXIT_SUCCESS;
   fitsfile *fptr=NULL;
   gal_list_str_t *tstll;
+  int status=0, numinkeys;
 
 
   /* Delete the requested keywords. */
@@ -373,11 +534,38 @@ keywords(struct fitsparams *p)
     }
 
 
+  /* Verify the CHECKSUM and DATASUM keys. */
+  if(p->verify)
+    {
+      keywords_open(p, &fptr, READONLY);
+      r=keywords_verify(p, &fptr);
+    }
+
+
+  /* If a range of keywords must be copied, get all the keywords as a
+     single string. */
+  if(p->copykeys)
+    {
+      keywords_open(p, &fptr, READONLY);
+      if( fits_convert_hdr2str(fptr, 0, NULL, 0, &inkeys, &numinkeys,
+                               &status) )
+        gal_fits_io_error(status, NULL);
+      status=0;
+    }
+
+
   /* Close the FITS file */
   if(fits_close_file(fptr, &status))
     gal_fits_io_error(status, NULL);
 
 
+  /* Write desired keywords into output. */
+  if(p->copykeys)
+    {
+      keywords_copykeys(p, inkeys, numinkeys);
+      free(inkeys);
+    }
+
   /* Return. */
   return r;
 }
diff --git a/bin/fits/keywords.h b/bin/fits/keywords.h
index a9ea31f..9d95675 100644
--- a/bin/fits/keywords.h
+++ b/bin/fits/keywords.h
@@ -5,7 +5,7 @@ Fits is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2015-2018, Free Software Foundation, Inc.
+Copyright (C) 2015-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/fits/main.c b/bin/fits/main.c
index b4b9260..7eda419 100644
--- a/bin/fits/main.c
+++ b/bin/fits/main.c
@@ -5,7 +5,7 @@ Fits is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2015-2018, Free Software Foundation, Inc.
+Copyright (C) 2015-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/fits/main.h b/bin/fits/main.h
index 43edc06..6d27a8c 100644
--- a/bin/fits/main.h
+++ b/bin/fits/main.h
@@ -5,7 +5,7 @@ Fits is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2015-2018, Free Software Foundation, Inc.
+Copyright (C) 2015-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
@@ -56,6 +56,7 @@ struct fitsparams
   struct gal_options_common_params cp;  /* Common parameters.           */
   int  hdu_in_commandline;     /* HDU wasn't given in config. file.     */
   char          *filename;     /* Name of input file.                   */
+  char            *outhdu;     /* HDU of output (only when necessary).  */
   gal_list_str_t  *remove;     /* Remove extensions from a file.        */
   gal_list_str_t    *copy;     /* Copy extensions to output.            */
   gal_list_str_t     *cut;     /* Copy ext. to output and remove.       */
@@ -69,10 +70,13 @@ struct fitsparams
   gal_list_str_t   *write;     /* Full arg. for keywords to add.        */
   gal_list_str_t *history;     /* HISTORY value.                        */
   gal_list_str_t *comment;     /* COMMENT value.                        */
+  uint8_t         *verify;     /* Verify the CHECKSUM and DATASUM keys. */
+  char          *copykeys;     /* Range of keywords to copy in output.  */
   uint8_t     quitonerror;     /* Quit if an error occurs.              */
 
   /* Internal: */
   int                         mode;  /* Operating on HDUs or keywords.  */
+  long            copykeysrange[2];  /* Start and end of copy.          */
   gal_fits_list_key_t  *write_keys;  /* Keys to write in the header.    */
   gal_fits_list_key_t *update_keys;  /* Keys to update in the header.   */
   time_t                   rawtime;  /* Starting time of the program.   */
diff --git a/bin/fits/ui.c b/bin/fits/ui.c
index 7b5ef33..04defd6 100644
--- a/bin/fits/ui.c
+++ b/bin/fits/ui.c
@@ -5,7 +5,7 @@ Fits is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2016-2018, Free Software Foundation, Inc.
+Copyright (C) 2016-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
@@ -217,6 +217,100 @@ parse_opt(int key, char *arg, struct argp_state *state)
 /**************************************************************/
 /***************       Sanity Check         *******************/
 /**************************************************************/
+static void
+ui_check_copykeys(struct fitsparams *p)
+{
+  long read;
+  char *tailptr;
+  size_t group=0;
+  char forl='f', *pt=p->copykeys;
+
+  /* Initialize the values. */
+  p->copykeysrange[0]=p->copykeysrange[1]=GAL_BLANK_LONG;
+
+  /* Parse the string: `forl': "first-or-last". */
+  while(*pt!='\0')
+    {
+      switch(*pt)
+        {
+        case ':':
+          forl='l';
+          ++pt;
+          break;
+        case '.':
+          error(EXIT_FAILURE, 0, "the numbers in the argument to "
+                "`--section` (`-s') have to be integers. You input "
+                "includes a float number: %s", p->copykeys);
+          break;
+        case ' ': case '\t':
+          ++pt;
+          break;
+
+        /* Numerical characters signify the start of a number, so we don't
+           need to increment the pointer and can just break out. */
+        case '0': case '1': case '2': case '3': case '4': case '5':
+        case '6': case '7': case '8': case '9': case '-':
+          break;
+
+        /* An un-recognized character should crash the program. */
+        case ',':
+          ++group;
+          forl='f';
+          ++pt;
+
+          /* For the time being, we just support one group. So we are
+             commenting the break here for it to follow onto default.
+          break;
+          */
+        default:
+          error(EXIT_FAILURE, 0, "value to `--copykeys' must only contain "
+                "integer numbers and these special characters between them: "
+                "`,', `:', `*' when necessary. But it is `%s' (the first "
+                "non-acceptable character is `%c').\n", p->copykeys, *pt);
+          break;
+        }
+
+      /* Read the number: */
+      read=strtol(pt, &tailptr, 0);
+
+      /* Check the progress.
+      printf("\n\n------\n%c: %ld (%s)\n", *pt, read, tailptr);
+      */
+
+      /* Make sure if a number was read at all? */
+      if(tailptr==pt) continue;   /* No number was read!                 */
+
+      /* Put it in the correct place. */
+      p->copykeysrange[ forl=='f' ? 0 : 1 ]=read;
+      pt=tailptr;
+    }
+
+  /* Basic sanity checks. */
+  if( p->copykeysrange[1]==GAL_BLANK_LONG )
+    error(EXIT_FAILURE, 0, "no ending keyword number given to `--copykeys'. "
+          "If you want to copy all the keywords after a certain one "
+          "(without worrying about how many there are), you can use `-1'.\n\n"
+          "For example if you want to copy all the keywords after the 20th, "
+          "you can use `--copykeys=20,-1'. Generally, you can use negative "
+          "numbers for the last keyword number to count from the end.");
+  if( p->copykeysrange[0]<=0 )
+    error(EXIT_FAILURE, 0, "the first number given to `--copykeys' must be "
+          "positive");
+  if( p->copykeysrange[1]>=0 && p->copykeysrange[0]>=p->copykeysrange[1] )
+    error(EXIT_FAILURE, 0, "the first number (%ld) given to `--copykeys' "
+          "must be smaller than the second (%ld)", p->copykeysrange[0],
+          p->copykeysrange[1]);
+
+  /* For a check:
+  printf("copykeys: %ld, %ld\n", p->copykeysrange[0], p->copykeysrange[1]);
+  exit(0);
+  */
+}
+
+
+
+
+
 /* Read and check ONLY the options. When arguments are involved, do the
    check in `ui_check_options_and_arguments'. */
 static void
@@ -225,7 +319,8 @@ ui_read_check_only_options(struct fitsparams *p)
   /* If any of the keyword manipulation options are requested, then set the
      mode flag to keyword-mode. */
   if( p->date || p->comment || p->history || p->asis || p->delete
-      || p->rename || p->update || p->write || p->printallkeys )
+      || p->rename || p->update || p->write || p->verify || p->printallkeys
+      || p->copykeys )
     {
       /* Set the mode. */
       p->mode=FITS_MODE_KEY;
@@ -235,6 +330,10 @@ ui_read_check_only_options(struct fitsparams *p)
         error(EXIT_FAILURE, 0, "a HDU (extension) is necessary for keywrod "
               "related options but none was defined. Please use the "
               "`--hdu' (or `-h') option to select one");
+
+      /* If Copy keys has been given, read it and make sure its setup. */
+      if(p->copykeys)
+        ui_check_copykeys(p);
     }
 
   /* Same for the extension-related options */
@@ -315,14 +414,15 @@ ui_check_options_and_arguments(struct fitsparams *p)
    keyword, so here, we tokenize them and put them into a
    `gal_fits_list_key_t' list. */
 static void
-ui_fill_fits_headerll(gal_list_str_t *input, gal_fits_list_key_t **output)
+ui_fill_fits_headerll(gal_list_str_t *input, gal_fits_list_key_t **output,
+                      char *option_name)
 {
   long l, *lp;
   void *fvalue;
   double d, *dp;
   gal_list_str_t *tmp;
-  int i=0, type, vfree;
   char *c, *cf, *start, *tailptr;
+  int i=0, type, vfree, needsvalue;
   char *original, *keyname, *value, *comment, *unit;
 
   for(tmp=input; tmp!=NULL; tmp=tmp->next)
@@ -380,54 +480,81 @@ ui_fill_fits_headerll(gal_list_str_t *input, 
gal_fits_list_key_t **output)
             }
         }
       while(++c<cf);
-      if(keyname==NULL)
-        error(EXIT_FAILURE, 0, "the keyword in %s was not readable. "
-              "The general expected format is:\n"
-              "    KEYWORD,value,\"a comment string\",unit\n"
+
+      /* See if this is an option that needs a value or not.*/
+      needsvalue=1;
+      if(keyname)
+        {
+          if( !strcasecmp(keyname,"checksum")
+              || !strcasecmp(keyname,"datasum") )
+            needsvalue=0;
+        }
+
+      /* Make sure the keyname and value (if necessary) is given. */
+      if( keyname==NULL || (needsvalue && value==NULL) )
+        error(EXIT_FAILURE, 0, "`--%s' option string (%s) can't be parsed. "
+              "The general expected format is (a comment string and unit "
+              "are optional):\n\n"
+              "    --%s=KEYWORD,value,\"a comment string\",unit\n\n"
               "Any space characters around the the comma (,) characters "
-              "will be seen as part of the respective token", original);
+              "will be seen as part of the respective token.\n\n"
+              "Note that there are some exceptions (where no value is need)"
+              "please see the manual for more (`$ info astfits')",
+              option_name, original, option_name);
       /*
       printf("\n\n-%s-\n-%s-\n-%s-\n-%s-\n", keyname, value, comment, unit);
       */
 
-      /* Find the of the value: */
-      errno=0;
-      l=strtol(value, &tailptr, 10);
-      if(*tailptr=='\0' && errno==0)
-        {
-          vfree=1;
-          type=GAL_TYPE_INT64;
-          errno=0;
-          fvalue=lp=malloc(sizeof *lp);
-          if(lp==NULL)
-            error(EXIT_FAILURE, errno, "%s: %zu bytes for `lp'",
-                  __func__, sizeof *lp);
-          *lp=l;
-        }
-      else
+
+      /* Find the type of the value: */
+      if(value)
         {
           errno=0;
-          d=strtod(value, &tailptr);
+          l=strtol(value, &tailptr, 10);
           if(*tailptr=='\0' && errno==0)
             {
               vfree=1;
-              type=GAL_TYPE_FLOAT64;
+              type=GAL_TYPE_INT64;
               errno=0;
-              fvalue=dp=malloc(sizeof *dp);
-              if(dp==NULL)
-                error(EXIT_FAILURE, errno, "%s: allocating %zu bytes for "
-                      "`dp'", __func__, sizeof *dp);
-              *dp=d;
+              fvalue=lp=malloc(sizeof *lp);
+              if(lp==NULL)
+                error(EXIT_FAILURE, errno, "%s: %zu bytes for `lp'",
+                      __func__, sizeof *lp);
+              *lp=l;
             }
           else
-            { fvalue=value; type=GAL_TYPE_STRING; vfree=0; }
+            {
+              errno=0;
+              d=strtod(value, &tailptr);
+              if(*tailptr=='\0' && errno==0)
+                {
+                  vfree=1;
+                  type=GAL_TYPE_FLOAT64;
+                  errno=0;
+                  fvalue=dp=malloc(sizeof *dp);
+                  if(dp==NULL)
+                    error(EXIT_FAILURE, errno, "%s: allocating %zu bytes "
+                          "for `dp'", __func__, sizeof *dp);
+                  *dp=d;
+                }
+              else
+                { fvalue=value; type=GAL_TYPE_STRING; vfree=0; }
+            }
+        }
+      else
+        {
+          fvalue=NULL; type=GAL_TYPE_UINT8; vfree=0;
         }
 
 
+      /* Add it to the list of keywords. */
       gal_fits_key_list_add(output, type, keyname, 0, fvalue, vfree,
                             comment, 0, unit);
       free(original);
     }
+
+  /* Reverse the list */
+  gal_fits_key_list_reverse(output);
 }
 
 
@@ -440,8 +567,8 @@ ui_preparations(struct fitsparams *p)
   /* Fill in the key linked lists. We want to do this here so if there is
      any error in parsing the user's input, the error is reported before
      any change is made in the input file. */
-  if(p->write)  ui_fill_fits_headerll(p->write, &p->write_keys);
-  if(p->update) ui_fill_fits_headerll(p->update, &p->update_keys);
+  if(p->write)  ui_fill_fits_headerll(p->write, &p->write_keys, "write");
+  if(p->update) ui_fill_fits_headerll(p->update, &p->update_keys, "update");
 }
 
 
diff --git a/bin/fits/ui.h b/bin/fits/ui.h
index be7fccf..582a03c 100644
--- a/bin/fits/ui.h
+++ b/bin/fits/ui.h
@@ -5,7 +5,7 @@ Fits is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2016-2018, Free Software Foundation, Inc.
+Copyright (C) 2016-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
@@ -43,7 +43,7 @@ enum program_args_groups
 
 /* Available letters for short options:
 
-   b e f g i j l m s v x y z
+   b e f g i j l m s x y z
    A B E G J L O W X Y
  */
 enum option_keys_enum
@@ -62,11 +62,15 @@ enum option_keys_enum
   UI_KEY_COMMENT      = 'c',
   UI_KEY_HISTORY      = 'H',
   UI_KEY_DATE         = 't',
+  UI_KEY_VERIFY       = 'v',
   UI_KEY_QUITONERROR  = 'Q',
 
 
   /* Only with long version (start with a value 1000, the rest will be set
      automatically). */
+  UI_KEY_TITLE        = 1000,
+  UI_KEY_OUTHDU,
+  UI_KEY_COPYKEYS,
 };
 
 
diff --git a/bin/match/Makefile.am b/bin/match/Makefile.am
index 6f707a5..c11c58d 100644
--- a/bin/match/Makefile.am
+++ b/bin/match/Makefile.am
@@ -3,7 +3,7 @@
 ## Original author:
 ##     Mohammad Akhlaghi <mohammad@akhlaghi.org>
 ## Contributing author(s):
-## Copyright (C) 2017-2018, Free Software Foundation, Inc.
+## Copyright (C) 2017-2019, Free Software Foundation, Inc.
 ##
 ## Gnuastro is free software: you can redistribute it and/or modify it
 ## under the terms of the GNU General Public License as published by
diff --git a/bin/match/args.h b/bin/match/args.h
index a756527..512d7aa 100644
--- a/bin/match/args.h
+++ b/bin/match/args.h
@@ -5,7 +5,7 @@ Match is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2017-2018, Free Software Foundation, Inc.
+Copyright (C) 2017-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/match/authors-cite.h b/bin/match/authors-cite.h
index 5454a76..7625dbf 100644
--- a/bin/match/authors-cite.h
+++ b/bin/match/authors-cite.h
@@ -5,7 +5,7 @@ Match is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2017-2018, Free Software Foundation, Inc.
+Copyright (C) 2017-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/match/main.c b/bin/match/main.c
index 810b0b1..f89132b 100644
--- a/bin/match/main.c
+++ b/bin/match/main.c
@@ -5,7 +5,7 @@ Match is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2017-2018, Free Software Foundation, Inc.
+Copyright (C) 2017-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/match/main.h b/bin/match/main.h
index 49ddf93..728daca 100644
--- a/bin/match/main.h
+++ b/bin/match/main.h
@@ -5,7 +5,7 @@ Match is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2017-2018, Free Software Foundation, Inc.
+Copyright (C) 2017-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/match/match.c b/bin/match/match.c
index 74d3ef4..cc52129 100644
--- a/bin/match/match.c
+++ b/bin/match/match.c
@@ -5,7 +5,7 @@ Match is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2017-2018, Free Software Foundation, Inc.
+Copyright (C) 2017-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/match/match.h b/bin/match/match.h
index b6524af..6e399e2 100644
--- a/bin/match/match.h
+++ b/bin/match/match.h
@@ -5,7 +5,7 @@ Match is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2017-2018, Free Software Foundation, Inc.
+Copyright (C) 2017-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/match/ui.c b/bin/match/ui.c
index c0d48d4..8c7fe8d 100644
--- a/bin/match/ui.c
+++ b/bin/match/ui.c
@@ -5,7 +5,7 @@ Match is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2017-2018, Free Software Foundation, Inc.
+Copyright (C) 2017-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/match/ui.h b/bin/match/ui.h
index d56a9f0..e949fb4 100644
--- a/bin/match/ui.h
+++ b/bin/match/ui.h
@@ -5,7 +5,7 @@ Match is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2017-2018, Free Software Foundation, Inc.
+Copyright (C) 2017-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/mkcatalog/Makefile.am b/bin/mkcatalog/Makefile.am
index f0cd7fc..b834dff 100644
--- a/bin/mkcatalog/Makefile.am
+++ b/bin/mkcatalog/Makefile.am
@@ -3,7 +3,7 @@
 ## Original author:
 ##     Mohammad Akhlaghi <mohammad@akhlaghi.org>
 ## Contributing author(s):
-## Copyright (C) 2015-2018, Free Software Foundation, Inc.
+## Copyright (C) 2015-2019, Free Software Foundation, Inc.
 ##
 ## Gnuastro is free software: you can redistribute it and/or modify it
 ## under the terms of the GNU General Public License as published by
diff --git a/bin/mkcatalog/args.h b/bin/mkcatalog/args.h
index bd57e58..87b1e7a 100644
--- a/bin/mkcatalog/args.h
+++ b/bin/mkcatalog/args.h
@@ -5,7 +5,7 @@ MakeCatalog is part of GNU Astronomy Utilities (Gnuastro) 
package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2016-2018, Free Software Foundation, Inc.
+Copyright (C) 2016-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/mkcatalog/authors-cite.h b/bin/mkcatalog/authors-cite.h
index 00d2b88..6d08bca 100644
--- a/bin/mkcatalog/authors-cite.h
+++ b/bin/mkcatalog/authors-cite.h
@@ -5,7 +5,7 @@ MakeCatalog is part of GNU Astronomy Utilities (Gnuastro) 
package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2017-2018, Free Software Foundation, Inc.
+Copyright (C) 2017-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/mkcatalog/columns.c b/bin/mkcatalog/columns.c
index 46a1d3e..613c895 100644
--- a/bin/mkcatalog/columns.c
+++ b/bin/mkcatalog/columns.c
@@ -5,7 +5,7 @@ MakeCatalog is part of GNU Astronomy Utilities (Gnuastro) 
package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2016-2018, Free Software Foundation, Inc.
+Copyright (C) 2016-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/mkcatalog/columns.h b/bin/mkcatalog/columns.h
index edda273..723cd7c 100644
--- a/bin/mkcatalog/columns.h
+++ b/bin/mkcatalog/columns.h
@@ -5,7 +5,7 @@ MakeCatalog is part of GNU Astronomy Utilities (Gnuastro) 
package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2016-2018, Free Software Foundation, Inc.
+Copyright (C) 2016-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/mkcatalog/main.c b/bin/mkcatalog/main.c
index 80b16cb..c24fb2d 100644
--- a/bin/mkcatalog/main.c
+++ b/bin/mkcatalog/main.c
@@ -5,7 +5,7 @@ MakeCatalog is part of GNU Astronomy Utilities (Gnuastro) 
package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2015-2018, Free Software Foundation, Inc.
+Copyright (C) 2015-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/mkcatalog/main.h b/bin/mkcatalog/main.h
index 349b3c2..2b3ca22 100644
--- a/bin/mkcatalog/main.h
+++ b/bin/mkcatalog/main.h
@@ -5,7 +5,7 @@ MakeCatalog is part of GNU Astronomy Utilities (Gnuastro) 
package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2016-2018, Free Software Foundation, Inc.
+Copyright (C) 2016-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/mkcatalog/mkcatalog.c b/bin/mkcatalog/mkcatalog.c
index 4a3efca..f5ec05c 100644
--- a/bin/mkcatalog/mkcatalog.c
+++ b/bin/mkcatalog/mkcatalog.c
@@ -5,7 +5,7 @@ MakeCatalog is part of GNU Astronomy Utilities (Gnuastro) 
package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2015-2018, Free Software Foundation, Inc.
+Copyright (C) 2015-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/mkcatalog/mkcatalog.h b/bin/mkcatalog/mkcatalog.h
index dd0c7bc..730274b 100644
--- a/bin/mkcatalog/mkcatalog.h
+++ b/bin/mkcatalog/mkcatalog.h
@@ -5,7 +5,7 @@ MakeCatalog is part of GNU Astronomy Utilities (Gnuastro) 
package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2015-2018, Free Software Foundation, Inc.
+Copyright (C) 2015-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/mkcatalog/parse.c b/bin/mkcatalog/parse.c
index 6a7ad46..ba50f68 100644
--- a/bin/mkcatalog/parse.c
+++ b/bin/mkcatalog/parse.c
@@ -5,7 +5,7 @@ MakeCatalog is part of GNU Astronomy Utilities (Gnuastro) 
package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2018, Free Software Foundation, Inc.
+Copyright (C) 2018-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/mkcatalog/parse.h b/bin/mkcatalog/parse.h
index 5dc0238..6b197a0 100644
--- a/bin/mkcatalog/parse.h
+++ b/bin/mkcatalog/parse.h
@@ -5,7 +5,7 @@ MakeCatalog is part of GNU Astronomy Utilities (Gnuastro) 
package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2018, Free Software Foundation, Inc.
+Copyright (C) 2018-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/mkcatalog/ui.c b/bin/mkcatalog/ui.c
index f9fdcad..0940735 100644
--- a/bin/mkcatalog/ui.c
+++ b/bin/mkcatalog/ui.c
@@ -5,7 +5,7 @@ MakeCatalog is part of GNU Astronomy Utilities (Gnuastro) 
package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2016-2018, Free Software Foundation, Inc.
+Copyright (C) 2016-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/mkcatalog/ui.h b/bin/mkcatalog/ui.h
index 596df75..f4d2f05 100644
--- a/bin/mkcatalog/ui.h
+++ b/bin/mkcatalog/ui.h
@@ -5,7 +5,7 @@ MakeCatalog is part of GNU Astronomy Utilities (Gnuastro) 
package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2016-2018, Free Software Foundation, Inc.
+Copyright (C) 2016-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/mkcatalog/upperlimit.c b/bin/mkcatalog/upperlimit.c
index 96e9600..151a7b0 100644
--- a/bin/mkcatalog/upperlimit.c
+++ b/bin/mkcatalog/upperlimit.c
@@ -5,7 +5,7 @@ MakeCatalog is part of GNU Astronomy Utilities (Gnuastro) 
package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2015-2018, Free Software Foundation, Inc.
+Copyright (C) 2015-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/mkcatalog/upperlimit.h b/bin/mkcatalog/upperlimit.h
index 001ed83..b25589d 100644
--- a/bin/mkcatalog/upperlimit.h
+++ b/bin/mkcatalog/upperlimit.h
@@ -5,7 +5,7 @@ MakeCatalog is part of GNU Astronomy Utilities (Gnuastro) 
package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2015-2018, Free Software Foundation, Inc.
+Copyright (C) 2015-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/mknoise/Makefile.am b/bin/mknoise/Makefile.am
index 30168b1..6f09968 100644
--- a/bin/mknoise/Makefile.am
+++ b/bin/mknoise/Makefile.am
@@ -3,7 +3,7 @@
 ## Original author:
 ##     Mohammad Akhlaghi <mohammad@akhlaghi.org>
 ## Contributing author(s):
-## Copyright (C) 2015-2018, Free Software Foundation, Inc.
+## Copyright (C) 2015-2019, Free Software Foundation, Inc.
 ##
 ## Gnuastro is free software: you can redistribute it and/or modify it
 ## under the terms of the GNU General Public License as published by
diff --git a/bin/mknoise/args.h b/bin/mknoise/args.h
index a841d8f..719a561 100644
--- a/bin/mknoise/args.h
+++ b/bin/mknoise/args.h
@@ -5,7 +5,7 @@ MakeNoise is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2016-2018, Free Software Foundation, Inc.
+Copyright (C) 2016-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/mknoise/authors-cite.h b/bin/mknoise/authors-cite.h
index f961888..ba297a8 100644
--- a/bin/mknoise/authors-cite.h
+++ b/bin/mknoise/authors-cite.h
@@ -5,7 +5,7 @@ MakeNoise is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2017-2018, Free Software Foundation, Inc.
+Copyright (C) 2017-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/mknoise/main.c b/bin/mknoise/main.c
index 5beb793..5e5ae13 100644
--- a/bin/mknoise/main.c
+++ b/bin/mknoise/main.c
@@ -5,7 +5,7 @@ MakeNoise is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2015-2018, Free Software Foundation, Inc.
+Copyright (C) 2015-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/mknoise/main.h b/bin/mknoise/main.h
index 634a08b..c315b4b 100644
--- a/bin/mknoise/main.h
+++ b/bin/mknoise/main.h
@@ -5,7 +5,7 @@ MakeNoise is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2016-2018, Free Software Foundation, Inc.
+Copyright (C) 2016-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/mknoise/mknoise.c b/bin/mknoise/mknoise.c
index 954fe85..27c5735 100644
--- a/bin/mknoise/mknoise.c
+++ b/bin/mknoise/mknoise.c
@@ -5,7 +5,7 @@ MakeNoise is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2015-2018, Free Software Foundation, Inc.
+Copyright (C) 2015-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/mknoise/mknoise.h b/bin/mknoise/mknoise.h
index b424652..5d144be 100644
--- a/bin/mknoise/mknoise.h
+++ b/bin/mknoise/mknoise.h
@@ -5,7 +5,7 @@ MakeNoise is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2015-2018, Free Software Foundation, Inc.
+Copyright (C) 2015-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/mknoise/ui.c b/bin/mknoise/ui.c
index 5221db0..3347590 100644
--- a/bin/mknoise/ui.c
+++ b/bin/mknoise/ui.c
@@ -5,7 +5,7 @@ MakeNoise is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2015-2018, Free Software Foundation, Inc.
+Copyright (C) 2015-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/mknoise/ui.h b/bin/mknoise/ui.h
index ad72af2..b21e0e4 100644
--- a/bin/mknoise/ui.h
+++ b/bin/mknoise/ui.h
@@ -5,7 +5,7 @@ MakeNoise is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2015-2018, Free Software Foundation, Inc.
+Copyright (C) 2015-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/mkprof/Makefile.am b/bin/mkprof/Makefile.am
index 287c78e..cfaa9ea 100644
--- a/bin/mkprof/Makefile.am
+++ b/bin/mkprof/Makefile.am
@@ -3,7 +3,7 @@
 ## Original author:
 ##     Mohammad Akhlaghi <mohammad@akhlaghi.org>
 ## Contributing author(s):
-## Copyright (C) 2015-2018, Free Software Foundation, Inc.
+## Copyright (C) 2015-2019, Free Software Foundation, Inc.
 ##
 ## Gnuastro is free software: you can redistribute it and/or modify it
 ## under the terms of the GNU General Public License as published by
diff --git a/bin/mkprof/args.h b/bin/mkprof/args.h
index 4ed95f1..be1039c 100644
--- a/bin/mkprof/args.h
+++ b/bin/mkprof/args.h
@@ -5,7 +5,7 @@ MakeProfiles is part of GNU Astronomy Utilities (Gnuastro) 
package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2015-2018, Free Software Foundation, Inc.
+Copyright (C) 2015-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/mkprof/authors-cite.h b/bin/mkprof/authors-cite.h
index 31504b3..777969a 100644
--- a/bin/mkprof/authors-cite.h
+++ b/bin/mkprof/authors-cite.h
@@ -5,7 +5,7 @@ MakeProfiles is part of GNU Astronomy Utilities (Gnuastro) 
package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2017-2018, Free Software Foundation, Inc.
+Copyright (C) 2017-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/mkprof/main.c b/bin/mkprof/main.c
index 800093c..630b415 100644
--- a/bin/mkprof/main.c
+++ b/bin/mkprof/main.c
@@ -5,7 +5,7 @@ MakeProfiles is part of GNU Astronomy Utilities (Gnuastro) 
package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2015-2018, Free Software Foundation, Inc.
+Copyright (C) 2015-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/mkprof/main.h b/bin/mkprof/main.h
index 53f6699..832b1c6 100644
--- a/bin/mkprof/main.h
+++ b/bin/mkprof/main.h
@@ -5,7 +5,7 @@ MakeProfiles is part of GNU Astronomy Utilities (Gnuastro) 
package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2015-2018, Free Software Foundation, Inc.
+Copyright (C) 2015-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/mkprof/mkprof.c b/bin/mkprof/mkprof.c
index 997e4c8..5900450 100644
--- a/bin/mkprof/mkprof.c
+++ b/bin/mkprof/mkprof.c
@@ -5,7 +5,7 @@ MakeProfiles is part of GNU Astronomy Utilities (Gnuastro) 
package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2015-2018, Free Software Foundation, Inc.
+Copyright (C) 2015-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/mkprof/mkprof.h b/bin/mkprof/mkprof.h
index 9794d03..8ddfe01 100644
--- a/bin/mkprof/mkprof.h
+++ b/bin/mkprof/mkprof.h
@@ -5,7 +5,7 @@ MakeProfiles is part of GNU Astronomy Utilities (Gnuastro) 
package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2015-2018, Free Software Foundation, Inc.
+Copyright (C) 2015-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/mkprof/oneprofile.c b/bin/mkprof/oneprofile.c
index 49d4d69..496c726 100644
--- a/bin/mkprof/oneprofile.c
+++ b/bin/mkprof/oneprofile.c
@@ -5,7 +5,7 @@ MakeProfiles is part of GNU Astronomy Utilities (Gnuastro) 
package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2015-2018, Free Software Foundation, Inc.
+Copyright (C) 2015-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/mkprof/oneprofile.h b/bin/mkprof/oneprofile.h
index e9c1d4f..acc7aea 100644
--- a/bin/mkprof/oneprofile.h
+++ b/bin/mkprof/oneprofile.h
@@ -5,7 +5,7 @@ MakeProfiles is part of GNU Astronomy Utilities (Gnuastro) 
package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2015-2018, Free Software Foundation, Inc.
+Copyright (C) 2015-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/mkprof/profiles.c b/bin/mkprof/profiles.c
index f350ddd..f838eb9 100644
--- a/bin/mkprof/profiles.c
+++ b/bin/mkprof/profiles.c
@@ -5,7 +5,7 @@ MakeProfiles is part of GNU Astronomy Utilities (Gnuastro) 
package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2015-2018, Free Software Foundation, Inc.
+Copyright (C) 2015-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/mkprof/profiles.h b/bin/mkprof/profiles.h
index 888acff..4ba0916 100644
--- a/bin/mkprof/profiles.h
+++ b/bin/mkprof/profiles.h
@@ -5,7 +5,7 @@ MakeProfiles is part of GNU Astronomy Utilities (Gnuastro) 
package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2015-2018, Free Software Foundation, Inc.
+Copyright (C) 2015-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/mkprof/ui.c b/bin/mkprof/ui.c
index 515760f..207389e 100644
--- a/bin/mkprof/ui.c
+++ b/bin/mkprof/ui.c
@@ -5,7 +5,7 @@ Arithmetic is part of GNU Astronomy Utilities (Gnuastro) 
package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2015-2018, Free Software Foundation, Inc.
+Copyright (C) 2015-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/mkprof/ui.h b/bin/mkprof/ui.h
index 7cdd06e..4b0898c 100644
--- a/bin/mkprof/ui.h
+++ b/bin/mkprof/ui.h
@@ -5,7 +5,7 @@ MakeProfiles is part of GNU Astronomy Utilities (Gnuastro) 
package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2015-2018, Free Software Foundation, Inc.
+Copyright (C) 2015-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/noisechisel/Makefile.am b/bin/noisechisel/Makefile.am
index a836f85..873a112 100644
--- a/bin/noisechisel/Makefile.am
+++ b/bin/noisechisel/Makefile.am
@@ -3,7 +3,7 @@
 ## Original author:
 ##     Mohammad Akhlaghi <mohammad@akhlaghi.org>
 ## Contributing author(s):
-## Copyright (C) 2016-2018, Free Software Foundation, Inc.
+## Copyright (C) 2016-2019, Free Software Foundation, Inc.
 ##
 ## Gnuastro is free software: you can redistribute it and/or modify it
 ## under the terms of the GNU General Public License as published by
diff --git a/bin/noisechisel/args.h b/bin/noisechisel/args.h
index 3b89dc8..07cfdb0 100644
--- a/bin/noisechisel/args.h
+++ b/bin/noisechisel/args.h
@@ -5,7 +5,7 @@ NoiseChisel is part of GNU Astronomy Utilities (Gnuastro) 
package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2015-2018, Free Software Foundation, Inc.
+Copyright (C) 2015-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/noisechisel/authors-cite.h b/bin/noisechisel/authors-cite.h
index 81fe4b2..b7c5acb 100644
--- a/bin/noisechisel/authors-cite.h
+++ b/bin/noisechisel/authors-cite.h
@@ -5,7 +5,7 @@ NoiseChisel is part of GNU Astronomy Utilities (Gnuastro) 
package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2017-2018, Free Software Foundation, Inc.
+Copyright (C) 2017-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/noisechisel/detection.c b/bin/noisechisel/detection.c
index 016bacc..48c7345 100644
--- a/bin/noisechisel/detection.c
+++ b/bin/noisechisel/detection.c
@@ -5,7 +5,7 @@ NoiseChisel is part of GNU Astronomy Utilities (Gnuastro) 
package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2015-2018, Free Software Foundation, Inc.
+Copyright (C) 2015-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/noisechisel/detection.h b/bin/noisechisel/detection.h
index fedfcf6..6613f75 100644
--- a/bin/noisechisel/detection.h
+++ b/bin/noisechisel/detection.h
@@ -5,7 +5,7 @@ NoiseChisel is part of GNU Astronomy Utilities (Gnuastro) 
package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2015-2018, Free Software Foundation, Inc.
+Copyright (C) 2015-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/noisechisel/kernel-2d.h b/bin/noisechisel/kernel-2d.h
index 06a640b..5afcf2a 100644
--- a/bin/noisechisel/kernel-2d.h
+++ b/bin/noisechisel/kernel-2d.h
@@ -5,7 +5,7 @@ This is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2018, Free Software Foundation, Inc.
+Copyright (C) 2018-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/noisechisel/main.c b/bin/noisechisel/main.c
index 00479e9..6161371 100644
--- a/bin/noisechisel/main.c
+++ b/bin/noisechisel/main.c
@@ -5,7 +5,7 @@ NoiseChisel is part of GNU Astronomy Utilities (Gnuastro) 
package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2015-2018, Free Software Foundation, Inc.
+Copyright (C) 2015-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/noisechisel/main.h b/bin/noisechisel/main.h
index 9ebb0ed..07867a8 100644
--- a/bin/noisechisel/main.h
+++ b/bin/noisechisel/main.h
@@ -5,7 +5,7 @@ NoiseChisel is part of GNU Astronomy Utilities (Gnuastro) 
package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2015-2018, Free Software Foundation, Inc.
+Copyright (C) 2015-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/noisechisel/noisechisel.c b/bin/noisechisel/noisechisel.c
index a434cbc..83c3d30 100644
--- a/bin/noisechisel/noisechisel.c
+++ b/bin/noisechisel/noisechisel.c
@@ -5,7 +5,7 @@ NoiseChisel is part of GNU Astronomy Utilities (Gnuastro) 
package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2015-2018, Free Software Foundation, Inc.
+Copyright (C) 2015-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/noisechisel/noisechisel.h b/bin/noisechisel/noisechisel.h
index 72376e5..c933f4e 100644
--- a/bin/noisechisel/noisechisel.h
+++ b/bin/noisechisel/noisechisel.h
@@ -5,7 +5,7 @@ NoiseChisel is part of GNU Astronomy Utilities (Gnuastro) 
package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2015-2018, Free Software Foundation, Inc.
+Copyright (C) 2015-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/noisechisel/sky.c b/bin/noisechisel/sky.c
index 1b6e9c6..bb2d091 100644
--- a/bin/noisechisel/sky.c
+++ b/bin/noisechisel/sky.c
@@ -5,7 +5,7 @@ NoiseChisel is part of GNU Astronomy Utilities (Gnuastro) 
package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2015-2018, Free Software Foundation, Inc.
+Copyright (C) 2015-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/noisechisel/sky.h b/bin/noisechisel/sky.h
index eaf0b73..a7d308f 100644
--- a/bin/noisechisel/sky.h
+++ b/bin/noisechisel/sky.h
@@ -5,7 +5,7 @@ NoiseChisel is part of GNU Astronomy Utilities (Gnuastro) 
package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2015-2018, Free Software Foundation, Inc.
+Copyright (C) 2015-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/noisechisel/threshold.c b/bin/noisechisel/threshold.c
index e372296..1132742 100644
--- a/bin/noisechisel/threshold.c
+++ b/bin/noisechisel/threshold.c
@@ -5,7 +5,7 @@ NoiseChisel is part of GNU Astronomy Utilities (Gnuastro) 
package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2015-2018, Free Software Foundation, Inc.
+Copyright (C) 2015-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/noisechisel/threshold.h b/bin/noisechisel/threshold.h
index 593e420..a4bc4bd 100644
--- a/bin/noisechisel/threshold.h
+++ b/bin/noisechisel/threshold.h
@@ -5,7 +5,7 @@ NoiseChisel is part of GNU Astronomy Utilities (Gnuastro) 
package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2015-2018, Free Software Foundation, Inc.
+Copyright (C) 2015-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/noisechisel/ui.c b/bin/noisechisel/ui.c
index 04b7358..1434dff 100644
--- a/bin/noisechisel/ui.c
+++ b/bin/noisechisel/ui.c
@@ -5,7 +5,7 @@ NoiseChisel is part of GNU Astronomy Utilities (Gnuastro) 
package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2015-2018, Free Software Foundation, Inc.
+Copyright (C) 2015-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/noisechisel/ui.h b/bin/noisechisel/ui.h
index 3953935..7cd0bd4 100644
--- a/bin/noisechisel/ui.h
+++ b/bin/noisechisel/ui.h
@@ -5,7 +5,7 @@ NoiseChisel is part of GNU Astronomy Utilities (Gnuastro) 
package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2015-2018, Free Software Foundation, Inc.
+Copyright (C) 2015-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/segment/Makefile.am b/bin/segment/Makefile.am
index 1fc9a6a..ea56135 100644
--- a/bin/segment/Makefile.am
+++ b/bin/segment/Makefile.am
@@ -3,7 +3,7 @@
 ## Original author:
 ##     Mohammad Akhlaghi <mohammad@akhlaghi.org>
 ## Contributing author(s):
-## Copyright (C) 2018-2018, Free Software Foundation, Inc.
+## Copyright (C) 2018-2019, Free Software Foundation, Inc.
 ##
 ## Gnuastro is free software: you can redistribute it and/or modify it
 ## under the terms of the GNU General Public License as published by
diff --git a/bin/segment/args.h b/bin/segment/args.h
index 3ed23ad..c3400b1 100644
--- a/bin/segment/args.h
+++ b/bin/segment/args.h
@@ -5,7 +5,7 @@ Segment is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2018, Free Software Foundation, Inc.
+Copyright (C) 2018-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/segment/authors-cite.h b/bin/segment/authors-cite.h
index 8b6855b..7e54e8b 100644
--- a/bin/segment/authors-cite.h
+++ b/bin/segment/authors-cite.h
@@ -5,7 +5,7 @@ Segment is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2018, Free Software Foundation, Inc.
+Copyright (C) 2018-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/segment/clumps.c b/bin/segment/clumps.c
index 5f15794..6fa59e6 100644
--- a/bin/segment/clumps.c
+++ b/bin/segment/clumps.c
@@ -5,7 +5,7 @@ Segment is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2015-2018, Free Software Foundation, Inc.
+Copyright (C) 2015-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/segment/clumps.h b/bin/segment/clumps.h
index 9799c45..8b22863 100644
--- a/bin/segment/clumps.h
+++ b/bin/segment/clumps.h
@@ -5,7 +5,7 @@ Segment is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2015-2018, Free Software Foundation, Inc.
+Copyright (C) 2015-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/segment/kernel-2d.h b/bin/segment/kernel-2d.h
index 2db052f..e6c0944 100644
--- a/bin/segment/kernel-2d.h
+++ b/bin/segment/kernel-2d.h
@@ -5,7 +5,7 @@ This is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2018, Free Software Foundation, Inc.
+Copyright (C) 2018-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/segment/main.c b/bin/segment/main.c
index 34254a3..ceb3274 100644
--- a/bin/segment/main.c
+++ b/bin/segment/main.c
@@ -5,7 +5,7 @@ Segment is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2018, Free Software Foundation, Inc.
+Copyright (C) 2018-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/segment/main.h b/bin/segment/main.h
index bb7842e..3391202 100644
--- a/bin/segment/main.h
+++ b/bin/segment/main.h
@@ -5,7 +5,7 @@ Segment is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2018, Free Software Foundation, Inc.
+Copyright (C) 2018-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/segment/segment.c b/bin/segment/segment.c
index 939bdcc..ae95b8c 100644
--- a/bin/segment/segment.c
+++ b/bin/segment/segment.c
@@ -5,7 +5,7 @@ Segment is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2015-2018, Free Software Foundation, Inc.
+Copyright (C) 2015-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/segment/segment.h b/bin/segment/segment.h
index 2e73e06..b179dfe 100644
--- a/bin/segment/segment.h
+++ b/bin/segment/segment.h
@@ -5,7 +5,7 @@ Segment is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2015-2018, Free Software Foundation, Inc.
+Copyright (C) 2015-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/segment/ui.c b/bin/segment/ui.c
index ef39735..0867674 100644
--- a/bin/segment/ui.c
+++ b/bin/segment/ui.c
@@ -5,7 +5,7 @@ Segment is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2018, Free Software Foundation, Inc.
+Copyright (C) 2018-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/segment/ui.h b/bin/segment/ui.h
index a2e9c8f..5badbe2 100644
--- a/bin/segment/ui.h
+++ b/bin/segment/ui.h
@@ -5,7 +5,7 @@ Segment is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2018, Free Software Foundation, Inc.
+Copyright (C) 2018-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/statistics/Makefile.am b/bin/statistics/Makefile.am
index f73fd99..972cc54 100644
--- a/bin/statistics/Makefile.am
+++ b/bin/statistics/Makefile.am
@@ -3,7 +3,7 @@
 ## Original author:
 ##     Mohammad Akhlaghi <mohammad@akhlaghi.org>
 ## Contributing author(s):
-## Copyright (C) 2015-2018, Free Software Foundation, Inc.
+## Copyright (C) 2015-2019, Free Software Foundation, Inc.
 ##
 ## Gnuastro is free software: you can redistribute it and/or modify it
 ## under the terms of the GNU General Public License as published by
diff --git a/bin/statistics/args.h b/bin/statistics/args.h
index e2d37ef..1684c15 100644
--- a/bin/statistics/args.h
+++ b/bin/statistics/args.h
@@ -5,7 +5,7 @@ Statistics is part of GNU Astronomy Utilities (Gnuastro) 
package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2015-2018, Free Software Foundation, Inc.
+Copyright (C) 2015-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/statistics/authors-cite.h b/bin/statistics/authors-cite.h
index 33d059e..15c0bf3 100644
--- a/bin/statistics/authors-cite.h
+++ b/bin/statistics/authors-cite.h
@@ -5,7 +5,7 @@ Statistics is part of GNU Astronomy Utilities (Gnuastro) 
package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2017-2018, Free Software Foundation, Inc.
+Copyright (C) 2017-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/statistics/main.c b/bin/statistics/main.c
index 427d07e..ec27665 100644
--- a/bin/statistics/main.c
+++ b/bin/statistics/main.c
@@ -5,7 +5,7 @@ Statistics is part of GNU Astronomy Utilities (Gnuastro) 
package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2015-2018, Free Software Foundation, Inc.
+Copyright (C) 2015-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/statistics/main.h b/bin/statistics/main.h
index 3f7a698..01ae40c 100644
--- a/bin/statistics/main.h
+++ b/bin/statistics/main.h
@@ -5,7 +5,7 @@ Statistics is part of GNU Astronomy Utilities (Gnuastro) 
package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2015-2018, Free Software Foundation, Inc.
+Copyright (C) 2015-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/statistics/sky.c b/bin/statistics/sky.c
index 130a797..11b6b11 100644
--- a/bin/statistics/sky.c
+++ b/bin/statistics/sky.c
@@ -5,7 +5,7 @@ Statistics is part of GNU Astronomy Utilities (Gnuastro) 
package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2015-2018, Free Software Foundation, Inc.
+Copyright (C) 2015-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/statistics/sky.h b/bin/statistics/sky.h
index 1a26ca5..18b4409 100644
--- a/bin/statistics/sky.h
+++ b/bin/statistics/sky.h
@@ -5,7 +5,7 @@ Statistics is part of GNU Astronomy Utilities (Gnuastro) 
package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2015-2018, Free Software Foundation, Inc.
+Copyright (C) 2015-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/statistics/statistics.c b/bin/statistics/statistics.c
index f54dea5..606fbb1 100644
--- a/bin/statistics/statistics.c
+++ b/bin/statistics/statistics.c
@@ -5,7 +5,7 @@ Statistics is part of GNU Astronomy Utilities (Gnuastro) 
package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2015-2018, Free Software Foundation, Inc.
+Copyright (C) 2015-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/statistics/statistics.h b/bin/statistics/statistics.h
index 8bc7455..f92391b 100644
--- a/bin/statistics/statistics.h
+++ b/bin/statistics/statistics.h
@@ -5,7 +5,7 @@ Statistics is part of GNU Astronomy Utilities (Gnuastro) 
package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2015-2018, Free Software Foundation, Inc.
+Copyright (C) 2015-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/statistics/ui.c b/bin/statistics/ui.c
index 2774022..dfa3c21 100644
--- a/bin/statistics/ui.c
+++ b/bin/statistics/ui.c
@@ -5,7 +5,7 @@ Statistics is part of GNU Astronomy Utilities (Gnuastro) 
package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2015-2018, Free Software Foundation, Inc.
+Copyright (C) 2015-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/statistics/ui.h b/bin/statistics/ui.h
index 206d1e6..de10940 100644
--- a/bin/statistics/ui.h
+++ b/bin/statistics/ui.h
@@ -5,7 +5,7 @@ Statistics is part of GNU Astronomy Utilities (Gnuastro) 
package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2015-2018, Free Software Foundation, Inc.
+Copyright (C) 2015-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/table/Makefile.am b/bin/table/Makefile.am
index b39485d..f3313a2 100644
--- a/bin/table/Makefile.am
+++ b/bin/table/Makefile.am
@@ -3,7 +3,7 @@
 ## Original author:
 ##     Mohammad Akhlaghi <mohammad@akhlaghi.org>
 ## Contributing author(s):
-## Copyright (C) 2016-2018, Free Software Foundation, Inc.
+## Copyright (C) 2016-2019, Free Software Foundation, Inc.
 ##
 ## Gnuastro is free software: you can redistribute it and/or modify it
 ## under the terms of the GNU General Public License as published by
diff --git a/bin/table/args.h b/bin/table/args.h
index 0123f24..afb9bde 100644
--- a/bin/table/args.h
+++ b/bin/table/args.h
@@ -5,7 +5,7 @@ Table is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2016-2018, Free Software Foundation, Inc.
+Copyright (C) 2016-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/table/authors-cite.h b/bin/table/authors-cite.h
index 883ceff..35d1228 100644
--- a/bin/table/authors-cite.h
+++ b/bin/table/authors-cite.h
@@ -5,7 +5,7 @@ Table is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2017-2018, Free Software Foundation, Inc.
+Copyright (C) 2017-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/table/main.c b/bin/table/main.c
index 8255275..5361480 100644
--- a/bin/table/main.c
+++ b/bin/table/main.c
@@ -5,7 +5,7 @@ Table is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2016-2018, Free Software Foundation, Inc.
+Copyright (C) 2016-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/table/main.h b/bin/table/main.h
index 89b885e..bc9af45 100644
--- a/bin/table/main.h
+++ b/bin/table/main.h
@@ -5,7 +5,7 @@ Table is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2016-2018, Free Software Foundation, Inc.
+Copyright (C) 2016-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/table/table.c b/bin/table/table.c
index b0afbf8..2c9b54c 100644
--- a/bin/table/table.c
+++ b/bin/table/table.c
@@ -5,7 +5,7 @@ Table is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2016-2018, Free Software Foundation, Inc.
+Copyright (C) 2016-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/table/table.h b/bin/table/table.h
index 1f43013..ee78434 100644
--- a/bin/table/table.h
+++ b/bin/table/table.h
@@ -5,7 +5,7 @@ Table is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2016-2018, Free Software Foundation, Inc.
+Copyright (C) 2016-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/table/ui.c b/bin/table/ui.c
index 1612aa2..ddac7e4 100644
--- a/bin/table/ui.c
+++ b/bin/table/ui.c
@@ -5,7 +5,7 @@ Table is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2016-2018, Free Software Foundation, Inc.
+Copyright (C) 2016-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/table/ui.h b/bin/table/ui.h
index c7482e5..e1f0d84 100644
--- a/bin/table/ui.h
+++ b/bin/table/ui.h
@@ -5,7 +5,7 @@ Table is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2016-2018, Free Software Foundation, Inc.
+Copyright (C) 2016-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/warp/Makefile.am b/bin/warp/Makefile.am
index a32f4bc..b7c0a7f 100644
--- a/bin/warp/Makefile.am
+++ b/bin/warp/Makefile.am
@@ -3,7 +3,7 @@
 ## Original author:
 ##     Mohammad Akhlaghi <mohammad@akhlaghi.org>
 ## Contributing author(s):
-## Copyright (C) 2015-2018, Free Software Foundation, Inc.
+## Copyright (C) 2015-2019, Free Software Foundation, Inc.
 ##
 ## Gnuastro is free software: you can redistribute it and/or modify it
 ## under the terms of the GNU General Public License as published by
diff --git a/bin/warp/args.h b/bin/warp/args.h
index 8c1e9ab..c1d10d5 100644
--- a/bin/warp/args.h
+++ b/bin/warp/args.h
@@ -5,7 +5,7 @@ Warp is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2016-2018, Free Software Foundation, Inc.
+Copyright (C) 2016-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/warp/authors-cite.h b/bin/warp/authors-cite.h
index 733a1d2..a22b983 100644
--- a/bin/warp/authors-cite.h
+++ b/bin/warp/authors-cite.h
@@ -5,7 +5,7 @@ Warp is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2017-2018, Free Software Foundation, Inc.
+Copyright (C) 2017-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/warp/main.c b/bin/warp/main.c
index 8368336..18677a6 100644
--- a/bin/warp/main.c
+++ b/bin/warp/main.c
@@ -5,7 +5,7 @@ Warp is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2015-2018, Free Software Foundation, Inc.
+Copyright (C) 2015-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/warp/main.h b/bin/warp/main.h
index d8727fe..acbfbfc 100644
--- a/bin/warp/main.h
+++ b/bin/warp/main.h
@@ -5,7 +5,7 @@ Warp is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2016-2018, Free Software Foundation, Inc.
+Copyright (C) 2016-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/warp/ui.c b/bin/warp/ui.c
index 66c49e1..697e2ee 100644
--- a/bin/warp/ui.c
+++ b/bin/warp/ui.c
@@ -5,7 +5,7 @@ Warp is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2016-2018, Free Software Foundation, Inc.
+Copyright (C) 2016-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/warp/ui.h b/bin/warp/ui.h
index 7dd3a6b..17df9db 100644
--- a/bin/warp/ui.h
+++ b/bin/warp/ui.h
@@ -5,7 +5,7 @@ Warp is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2016-2018, Free Software Foundation, Inc.
+Copyright (C) 2016-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/warp/warp.c b/bin/warp/warp.c
index fe89313..db8c00f 100644
--- a/bin/warp/warp.c
+++ b/bin/warp/warp.c
@@ -5,7 +5,7 @@ Warp is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2015-2018, Free Software Foundation, Inc.
+Copyright (C) 2015-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bin/warp/warp.h b/bin/warp/warp.h
index c1e7cf3..504493c 100644
--- a/bin/warp/warp.h
+++ b/bin/warp/warp.h
@@ -5,7 +5,7 @@ Warp is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2015-2018, Free Software Foundation, Inc.
+Copyright (C) 2015-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/bootstrap b/bootstrap
index ed3b0a4..c13b486 100755
--- a/bootstrap
+++ b/bootstrap
@@ -1,10 +1,10 @@
 #! /bin/sh
 # Print a version string.
-scriptversion=2018-07-01.02; # UTC
+scriptversion=2018-10-13.05; # UTC
 
 # Bootstrap this package from checked-out sources.
 
-# Copyright (C) 2003-2018 Free Software Foundation, Inc.
+# Copyright (C) 2003-2019 Free Software Foundation, Inc.
 
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
@@ -142,6 +142,9 @@ die() { warn_ "$@"; exit 1; }
 
 # Configuration.
 
+# Name of the Makefile.am
+gnulib_mk=gnulib.mk
+
 # List of gnulib modules needed.
 gnulib_modules=
 
@@ -159,18 +162,11 @@ bootstrap_post_import_hook() { :; }
 # Override it via your own definition in bootstrap.conf.
 bootstrap_epilogue() { :; }
 
-# The command to download all .po files for a specified domain into
-# a specified directory.  Fill in the first %s is the domain name, and
-# the second with the destination directory.  Use rsync's -L and -r
-# options because the latest/%s directory and the .po files within are
-# all symlinks.
+# The command to download all .po files for a specified domain into a
+# specified directory.  Fill in the first %s with the destination
+# directory and the second with the domain name.
 po_download_command_format=\
-"rsync --delete --exclude '*.s1' -Lrtvz \
- 'translationproject.org::tp/latest/%s/' '%s'"
-
-# Fallback for downloading .po files (if rsync fails).
-po_download_command_format2=\
-"wget --mirror -nd -q -np -A.po -P '%s' \
+"wget --mirror --level=1 -nd -q -A.po -P '%s' \
  https://translationproject.org/latest/%s/";
 
 # Prefer a non-empty tarname (4th argument of AC_INIT if given), else
@@ -738,10 +734,7 @@ download_po_files() {
   subdir=$1
   domain=$2
   echo "$me: getting translations into $subdir for $domain..."
-  cmd=$(printf "$po_download_command_format" "$domain" "$subdir")
-  eval "$cmd" && return
-  # Fallback to HTTPS.
-  cmd=$(printf "$po_download_command_format2" "$subdir" "$domain")
+  cmd=$(printf "$po_download_command_format" "$subdir" "$domain")
   eval "$cmd"
 }
 
diff --git a/bootstrap.conf b/bootstrap.conf
index 32118c1..4112a1c 100644
--- a/bootstrap.conf
+++ b/bootstrap.conf
@@ -18,7 +18,7 @@
 #     Mosè Giordano <mose@gnu.org>
 # Contributing author(s):
 #     Mohammad Akhlaghi <mohammad@akhlaghi.org>
-# Copyright (C) 2016-2018 Free Software Foundation, Inc.
+# Copyright (C) 2016-2019 Free Software Foundation, Inc.
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/configure.ac b/configure.ac
index 6313a4d..8fea1e7 100644
--- a/configure.ac
+++ b/configure.ac
@@ -12,7 +12,7 @@
 # Original author:
 #     Mohammad Akhlaghi <mohammad@akhlaghi.org>
 # Contributing author(s):
-# Copyright (C) 2015-2018, Free Software Foundation, Inc.
+# Copyright (C) 2015-2019, Free Software Foundation, Inc.
 #
 # Gnuastro is free software: you can redistribute it and/or modify it
 # under the terms of the GNU General Public License as published by
@@ -50,7 +50,7 @@ AC_CONFIG_MACRO_DIRS([bootstrapped/m4])
 
 # Library version, see the GNU Libtool manual ("Library interface versions"
 # section for the exact definition of each) for
-GAL_CURRENT=6
+GAL_CURRENT=7
 GAL_REVISION=0
 GAL_AGE=0
 GAL_LT_VERSION="${GAL_CURRENT}:${GAL_REVISION}:${GAL_AGE}"
diff --git a/developer-build b/developer-build
index 3253c77..f528b8b 100755
--- a/developer-build
+++ b/developer-build
@@ -9,7 +9,7 @@
 #   Mohammad Akhlaghi <mohammad@akhlaghi.org>
 # Contributing author(s):
 #   Mosè Giordano <mose@gnu.org>
-# Copyright (C) 2016-2018, Free Software Foundation, Inc.
+# Copyright (C) 2016-2019, Free Software Foundation, Inc.
 #
 # Gnuastro is free software: you can redistribute it and/or modify it under
 # the terms of the GNU General Public License as published by the Free
diff --git a/doc/Makefile.am b/doc/Makefile.am
index 7174cb9..8929b31 100644
--- a/doc/Makefile.am
+++ b/doc/Makefile.am
@@ -6,7 +6,7 @@
 ## Original author:
 ##     Mohammad Akhlaghi <mohammad@akhlaghi.org>
 ## Contributing author(s):
-## Copyright (C) 2015-2018, Free Software Foundation, Inc.
+## Copyright (C) 2015-2019, Free Software Foundation, Inc.
 ##
 ## GNU Astronomy Utilities is free software: you can redistribute it
 ## and/or modify it under the terms of the GNU General Public License
diff --git a/doc/announce-acknowledge.txt b/doc/announce-acknowledge.txt
index 2a42585..3e63c06 100644
--- a/doc/announce-acknowledge.txt
+++ b/doc/announce-acknowledge.txt
@@ -1,11 +1 @@
 Alphabetically ordered list to acknowledge in the next release.
-
-Fernando Buitrago
-Pierre-Alain Duc
-Gaspar Galaz
-Raúl Infante Sainz
-Johan Knapen
-Mamta Pommier
-Michael Stein
-Ignacio Trujillo
-David Valls-Gabaud
diff --git a/doc/fonts.css b/doc/fonts.css
index 008126c..9145272 100644
--- a/doc/fonts.css
+++ b/doc/fonts.css
@@ -3,7 +3,7 @@
 Original author:
     Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2016-2018 Free Software Foundation, Inc.
+Copyright (C) 2016-2019 Free Software Foundation, Inc.
 
 This stylesheet is free software: you can redistribute it and/or
 modify it under the terms of the GNU General Public Licence as
diff --git a/doc/forwebpage b/doc/forwebpage
index e70dafe..cc42dae 100755
--- a/doc/forwebpage
+++ b/doc/forwebpage
@@ -76,7 +76,7 @@
 # Original author:
 #     Mohammad Akhlaghi <mohammad@akhlaghi.org>
 # Contributing author(s):
-# Copyright (C) 2016-2018, Free Software Foundation, Inc.
+# Copyright (C) 2016-2019, Free Software Foundation, Inc.
 #
 # Gnuastro is free software: you can redistribute it and/or modify it
 # under the terms of the GNU General Public License as published by
diff --git a/doc/genauthors b/doc/genauthors
index da1a9f8..078fbf1 100755
--- a/doc/genauthors
+++ b/doc/genauthors
@@ -13,7 +13,7 @@
 #     Mohammad Akhlaghi <mohammad@akhlaghi.org>
 # Contributing author(s):
 #     Mosè Giordano <mose@gnu.org>
-# Copyright (C) 2016-2018, Free Software Foundation, Inc.
+# Copyright (C) 2016-2019, Free Software Foundation, Inc.
 #
 # Gnuastro is free software: you can redistribute it and/or modify it under
 # the terms of the GNU General Public License as published by the Free
diff --git a/doc/gnuastro.en.html b/doc/gnuastro.en.html
index 3edb537..b8c04d7 100644
--- a/doc/gnuastro.en.html
+++ b/doc/gnuastro.en.html
@@ -85,9 +85,9 @@ for entertaining and easy to read real world examples of using
 
 <p>
   The current stable release
-  is <a href="http://ftp.gnu.org/gnu/gnuastro/gnuastro-0.7.tar.gz";>Gnuastro
-  0.7</a> (August 8th, 2018).
-  Use <a href="http://ftpmirror.gnu.org/gnuastro/gnuastro-0.7.tar.gz";>a
+  is <a href="http://ftp.gnu.org/gnu/gnuastro/gnuastro-0.8.tar.gz";>Gnuastro
+  0.8</a> (December 28th, 2018).
+  Use <a href="http://ftpmirror.gnu.org/gnuastro/gnuastro-0.8.tar.gz";>a
   mirror</a> if possible.
 
   <!-- Comment the test release notice when the test release is not more
@@ -98,7 +98,7 @@ for entertaining and easy to read real world examples of using
   To stay up to date, please subscribe.</p>
 
 <p>For details of the significant changes in this release, please see the
-  <a 
href="https://git.savannah.gnu.org/cgit/gnuastro.git/plain/NEWS?id=gnuastro_v0.7";>NEWS</a>
+  <a 
href="https://git.savannah.gnu.org/cgit/gnuastro.git/plain/NEWS?id=gnuastro_v0.8";>NEWS</a>
   file.</p>
 
 <p>The
diff --git a/doc/gnuastro.fr.html b/doc/gnuastro.fr.html
index 7982329..dd1260c 100644
--- a/doc/gnuastro.fr.html
+++ b/doc/gnuastro.fr.html
@@ -85,15 +85,15 @@ h3 { clear: both; }
 <h3 id="download">Téléchargement</h3>
 
 <p>La version stable actuelle
-  est <a href="https://ftp.gnu.org/gnu/gnuastro/gnuastro-0.7.tar.gz";>Gnuastro
-  0.7</a> (sortie le 8 août
-  2018). Utilisez <a 
href="https://ftpmirror.gnu.org/gnuastro/gnuastro-0.7.tar.gz";>un
+  est <a href="https://ftp.gnu.org/gnu/gnuastro/gnuastro-0.8.tar.gz";>Gnuastro
+  0.8</a> (sortie le 28 décembre
+  2018). Utilisez <a 
href="https://ftpmirror.gnu.org/gnuastro/gnuastro-0.8.tar.gz";>un
   miroir</a> si possible.  <br />Les nouvelles publications sont annoncées
   sur <a 
href="https://lists.gnu.org/mailman/listinfo/info-gnuastro";>info-gnuastro</a>.
   Abonnez-vous pour rester au courant.</p>
 
 <p>Les changements importants sont décrits dans le
-  fichier <a 
href="https://git.savannah.gnu.org/cgit/gnuastro.git/plain/NEWS?id=gnuastro_v0.7";>
+  fichier <a 
href="https://git.savannah.gnu.org/cgit/gnuastro.git/plain/NEWS?id=gnuastro_v0.8";>
   NEWS</a>.</p>
 
 <p>Le lien
diff --git a/doc/gnuastro.texi b/doc/gnuastro.texi
index 99e2840..1cd4de0 100644
--- a/doc/gnuastro.texi
+++ b/doc/gnuastro.texi
@@ -29,7 +29,7 @@ This book documents version @value{VERSION} of the GNU 
Astronomy Utilities
 (Gnuastro). Gnuastro provides various programs and libraries for
 astronomical data manipulation and analysis.
 
-Copyright @copyright{} 2015-2018 Free Software Foundation, Inc.
+Copyright @copyright{} 2015-2019 Free Software Foundation, Inc.
 
 @quotation
 Permission is granted to copy, distribute and/or modify this document under
@@ -1736,20 +1736,21 @@ their useful and constructive comments and suggestions 
(in alphabetical
 order by family name): Valentina Abril-melgarejo, Marjan Akbari, Roland
 Bacon, Karl Berry, Leindert Boogaard, Nicolas Bouch@'e, Fernando Buitrago,
 Adrian Bunk, Rosa Calvi, Nushkia Chamba, Benjamin Clement, Nima Dehdilani,
-Antonio Diaz Diaz, Th@'er@`ese Godefroy, Madusha Gunawardhana, Stephen
-Hamer, Takashi Ichikawa, Ra@'ul Infante Sainz, Brandon Invergo, Oryna
-Ivashtenko, Aur@'elien Jarno, Lee Kelvin, Brandon Kelly, Mohammad-Reza
-Khellat, Geoffry Krouchi, Floriane Leclercq, Alan Lefor, Guillaume Mahler,
-Juan Molina Tobar, Francesco Montanari, Dmitrii Oparin, Bertrand Pain,
-William Pence, Bob Proulx, Teymoor Saifollahi, Yahya Sefidbakht, Alejandro
-Serrano Borlaff, Jenny Sorce, Lee Spitler, Richard Stallman, Ole Streicher,
-Alfred M. Szmidt, Michel Tallon, Juan C. Tello, @'Eric Thi@'ebaut, Ignacio
-Trujillo, David Valls-Gabaud, Aaron Watkins, Christopher Willmer, Sara
-Yousefi Taemeh, Johannes Zabl. The GNU French Translation Team is also
-managing the French version of the top Gnuastro webpage which we highly
-appreciate. Finally we should thank all the (sometimes anonymous) people in
-various online forums which patiently answered all our small (but
-important) technical questions.
+Antonio Diaz Diaz, Pierre-Alain Duc, Gaspar Galaz, Th@'er@`ese Godefroy,
+Madusha Gunawardhana, Stephen Hamer, Takashi Ichikawa, Ra@'ul Infante
+Sainz, Brandon Invergo, Oryna Ivashtenko, Aur@'elien Jarno, Lee Kelvin,
+Brandon Kelly, Mohammad-Reza Khellat, Johan Knapen, Geoffry Krouchi,
+Floriane Leclercq, Alan Lefor, Guillaume Mahler, Juan Molina Tobar,
+Francesco Montanari, Dmitrii Oparin, Bertrand Pain, William Pence, Mamta
+Pommier, Bob Proulx, Teymoor Saifollahi, Yahya Sefidbakht, Alejandro
+Serrano Borlaff, Jenny Sorce, Lee Spitler, Richard Stallman, Michael Stein,
+Ole Streicher, Alfred M. Szmidt, Michel Tallon, Juan C. Tello, @'Eric
+Thi@'ebaut, Ignacio Trujillo, David Valls-Gabaud, Aaron Watkins,
+Christopher Willmer, Sara Yousefi Taemeh, Johannes Zabl. The GNU French
+Translation Team is also managing the French version of the top Gnuastro
+webpage which we highly appreciate. Finally we should thank all the
+(sometimes anonymous) people in various online forums which patiently
+answered all our small (but important) technical questions.
 
 All work on Gnuastro has been voluntary, but the authors are most grateful
 to the following institutions (in chronological order) for hosting us in
@@ -5563,7 +5564,7 @@ $ sudo pacman -S ghostscript libtool libjpeg libtiff      
  \
 @url{https://www.suse.com,SUSE} with both stable and rolling releases.
 SUSE Linux Enterprise
 Server@footnote{@url{https://www.suse.com/products/server}} (SLES) is the
-commmercial offering which shares code and tools. Many additional packages
+commercial offering which shares code and tools. Many additional packages
 are offered in the Build
 Service@footnote{@url{https://build.opensuse.org}}. openSUSE and SLES use
 @command{zypper} (cli) and YaST (GUI) for managing repositories and
@@ -6149,9 +6150,13 @@ segmentation fault is found during @command{make check}.
 Only build and install @file{progname} along with any other program that is
 enabled in this fashion. @file{progname} is the name of the executable
 without the @file{ast}, for example @file{crop} for Crop (with the
-executable name of @file{astcrop}). If this option is called for any of the
-programs in Gnuastro, any program which is not explicitly enabled will not
-be built or installed.
+executable name of @file{astcrop}).
+
+Note that by default all the programs will be installed. This option (and
+the @option{--disable-progname} options) are only relevant when you don't
+want to install all the programs. Therefore, if this option is called for
+any of the programs in Gnuastro, any program which is not explicitly
+enabled will not be built or installed.
 
 @item --disable-progname
 @itemx --enable-progname=no
@@ -10139,6 +10144,10 @@ effect then the update operations.
 @option{--date}
 @item
 @option{--printallkeys}
+@item
+@option{--verify}
+@item
+@option{--copykeys}
 @end enumerate
 @noindent
 All possible syntax errors will be reported before the keywords are
@@ -10268,7 +10277,89 @@ lead to undefined behavior.
 @item -w STR
 @itemx --write=STR
 Write a keyword to the header. For the possible value input formats,
-comments and units for the keyword, see the @option{--update} option above.
+comments and units for the keyword, see the @option{--update} option
+above. The special names (first string) below will cause a special
+behavior:
+
+@table @option
+
+@item /
+Write a ``title'' to the list of keywords. A title consists of one blank
+line and another which is blank for several spaces and starts with a slash
+(@key{/}). The second string given to this option is the ``title'' or
+string printed after the slash. For example with the command below you can
+add a ``title'' of `My keywords' after the existing keywords and add the
+subsequent @code{K1} and @code{K2} keywords under it (note that keyword
+names are not case sensitive).
+
+@example
+$ astfits test.fits -h1 --write=/,"My keywords" \
+          --write=k1,1.23,"My first keyword"    \
+          --write=k2,4.56,"My second keyword"
+$ astfits test.fits -h1
+[[[ ... truncated ... ]]]
+
+                      / My keywords
+K1      =                 1.23 / My first keyword
+K2      =                 4.56 / My second keyword
+END
+@end example
+
+Adding a ``title'' before each contextually separate group of header
+keywords greatly helps in readability and visual inspection of the
+keywords. So generally, when you want to add new FITS keywords, its good
+practice to also add a title before them.
+
+The reason you need to use @key{/} as the keyword name for setting a title
+is that @key{/} is the first non-white character.
+
+The title(s) is(are) written into the FITS with the same order that
+@option{--write} is called. Therefore in one run of the Fits progarm, you
+can specify many different titles (with their own keywords under them). For
+example the command below that builds on the previous example and adds
+another group of keywords named @code{A1} and @code{A2}.
+
+@example
+$ astfits test.fits -h1 --write=/,"My keywords"   \
+          --write=k1,1.23,"My first keyword"      \
+          --write=k2,4.56,"My second keyword"     \
+          --write=/,"My second group of keywords" \
+          --write=a1,7.89,"First keyword"         \
+          --write=a2,0.12,"Second keyword"
+@end example
+
+@item checksum
+@cindex CFITSIO
+@cindex @code{DATASUM}: FITS keyword
+@cindex @code{CHECKSUM}: FITS keyword
+When nothing is given afterwards, the header integrity
+keywords@footnote{Section 4.4.2.7 (page 15) of
+@url{https://fits.gsfc.nasa.gov/standard40/fits_standard40aa-le.pdf}}
+@code{DATASUM} and @code{CHECKSUM} will be written/updated. They are
+calculated and written by CFITSIO. They thus comply with the FITS standard
+4.0 that defines these keywords.
+
+If a value is given (for example
+@option{--write=checksum,my-own-checksum,"my checksum"}), then CFITSIO
+won't be called to calculate these two keywords and the value (as well as
+possible comment and unit) will be written just like any other
+keyword. This is generally not recommended, but necessary in special
+circumstances (where the checksum needs to be manually updated for
+example).
+
+@code{DATASUM} only depends on the data section of the HDU/extension, so it
+is not changed when you update the keywords. But @code{CHECKSUM} also
+depends on the header and will not be valid if you make any further changes
+to the header. This includes any further keyword modification options in
+the same call to the Fits program. Therefore it is recommended to write
+these keywords as the last keywords that are written/modified in the
+extension. You can use the @option{--verify} option (described below) to
+verify the values of these two keywords.
+
+@item datasum
+Similar to @option{checksum}, but only write the @code{DATASUM} keyword
+(that doesn't depend on the header keywords, only the data).
+@end table
 
 @item -H STR
 @itemx --history STR
@@ -10300,6 +10391,46 @@ editing commands, as described above, all other 
editing commands take
 precedence to this. Therefore, it will print the final keywords after all
 the editing has been done.
 
+@item -v
+@itemx --verify
+Verify the @code{DATASUM} and @code{CHECKSUM} data integrity keywords of
+the FITS standard. See the description under the @code{checksum} (under
+@option{--write}, above) for more on these keywords.
+
+This option will print @code{Verified} for both keywords if they can be
+verified. Otherwise, if they don't exist in the given HDU/extension, it
+will print @code{NOT-PRESENT}, and if they cannot be verified it will print
+@code{INCORRECT}. In the latter case (when the keyword values exist but
+can't be verified), the Fits program will also return with a failure.
+
+By default this function will also print a short description of the
+@code{DATASUM} AND @code{CHECKSUM} keywords. You can supress this extra
+information with @code{--quiet} option.
+
+@item --copykeys=INT:INT
+Copy the input's keyword records in the given range (inclusive) to the
+output HDU (specified with the @option{--output} and @option{--outhdu}
+options, for the filename and HDU/extension respectively).
+
+The given string to this option must be two integers separated by a colon
+(@key{:}). The first integer must be positive (counting of the keyword
+records starts from 1). The second integer may be negative (zero is not
+acceptable) or an integer larger than the first.
+
+A negative second integer means counting from the end. So @code{-1} is the
+last copy-able keyword (not including the @code{END} keyword).
+
+To see the header keywords of the input with a number before them, you can
+pipe the output of the FITS program (when it prints all the keywords in an
+extension) into the @command{cat} program like below:
+
+@example
+$ astfits input.fits -h1 | cat -n
+@end example
+
+@item --outhdu
+The HDU/extension to write the output keywords of @option{--copykeys}.
+
 @item -Q
 @itemx --quitonerror
 Quit if any of the operations above are not successful. By default if
@@ -10575,7 +10706,7 @@ formats} or @ref{Fits}).
 
 When a subject has been imaged in multiple filters, you can feed each
 different filter into the red, green and blue channels and obtain a colored
-visualizion. In ConvertType, you can do this by giving each separate
+visualization. In ConvertType, you can do this by giving each separate
 single-channel dataset (for example in the FITS image format) as an
 argument (in the proper order), then asking for the output in a format that
 supports multi-channel datasets (for example JPEG or PDF, see the examples
@@ -10604,7 +10735,7 @@ Since grayscale is a commonly used mapping of 
single-valued datasets, we'll
 continue with a closer look at how it is stored. One way to represent a
 gray-scale image in different color spaces is to use the same proportions
 of the primary colors in each pixel. This is the common way most FITS image
-displayer work: for each pixel, they fill all the channels with the single
+viewers work: for each pixel, they fill all the channels with the single
 value. While this is necessary for displaying a dataset, there are
 downsides when storing/saving this type of grayscale visualization (for
 example in a paper).
@@ -10676,7 +10807,7 @@ $ cat 2darray.txt | astconvertt -oimg.fits
 @end example
 
 @noindent
-The output's file format will be interpretted from the value given to the
+The output's file format will be interpreted from the value given to the
 @option{--output} option. It can either be given on the command-line or in
 any of the configuration files (see @ref{Configuration files}). Note that
 if the output suffix is not recognized, it will default to plain text
@@ -10824,7 +10955,7 @@ 
Value@footnote{@url{https://en.wikipedia.org/wiki/HSL_and_HSV}} color
 map. If no values are given after the name (@option{--colormap=hsv}), the
 dataset will be scaled to 0 and 360 for hue covering the full spectrum of
 colors. However, you can limit the range of hue (to show only a special
-color range) by explicity requesting them after the name (for example
+color range) by explicitly requesting them after the name (for example
 @option{--colormap=hsv,20,240}).
 
 The mapping of a single-channel dataset to HSV is done through the Hue and
@@ -23829,6 +23960,16 @@ Blank value for an unsigned, 64-bit integer.
 Blank value for a signed, 64-bit integer.
 @end deffn
 
+@deffn {Global integer}  GAL_BLANK_LONG
+Blank value for @code{long} type (@code{int32_t} or @code{int64_t} in
+32-bit or 64-bit systems).
+@end deffn
+
+@deffn {Global integer}  GAL_BLANK_ULONG
+Blank value for @code{unsigned long} type (@code{uint32_t} or
+@code{uint64_t} in 32-bit or 64-bit systems).
+@end deffn
+
 @deffn {Global integer}  GAL_BLANK_SIZE_T
 Blank value for @code{size_t} type (@code{uint32_t} or @code{uint64_t} in
 32-bit or 64-bit systems).
@@ -25542,7 +25683,7 @@ should be used for the @code{searchin} variables of the 
functions.
 Store the information of each column in a table into an array of data
 structures with @code{numcols} datasets (one data structure for each
 column). The number of rows is stored in @code{numrows}. The format of the
-table (e.g., ascii text file, or FITS binary or ASCII table) will be put in
+table (e.g., ASCII text file, or FITS binary or ASCII table) will be put in
 @code{tableformat} (macros defined above). If the @code{filename} is not a
 FITS file, then @code{hdu} will not be used (can be @code{NULL}).
 
diff --git a/doc/plotsrc/Makefile b/doc/plotsrc/Makefile
index 2369082..e7a6788 100644
--- a/doc/plotsrc/Makefile
+++ b/doc/plotsrc/Makefile
@@ -3,7 +3,7 @@
 # Original author:
 #     Mohammad Akhlaghi <mohammad@akhlaghi.org>
 # Contributing author(s):
-# Copyright (C) 2015-2018, Free Software Foundation, Inc.
+# Copyright (C) 2015-2019, Free Software Foundation, Inc.
 #
 # GNU Astronomy Utilities is free software: you can redistribute it
 # and/or modify it under the terms of the GNU General Public License
diff --git a/doc/plotsrc/all.tex b/doc/plotsrc/all.tex
index 5a0f58f..c9c4888 100644
--- a/doc/plotsrc/all.tex
+++ b/doc/plotsrc/all.tex
@@ -5,7 +5,7 @@
 % Original author:
 %     Mohammad Akhlaghi <mohammad@akhlaghi.org>
 % Contributing author(s):
-% Copyright (C) 2015-2018, Free Software Foundation, Inc.
+% Copyright (C) 2015-2019, Free Software Foundation, Inc.
 %
 % Gnuastro is free software: you can redistribute it and/or modify it
 % under the terms of the GNU General Public License as published by
diff --git a/doc/plotsrc/conversions.sh b/doc/plotsrc/conversions.sh
index bad65ec..df48883 100755
--- a/doc/plotsrc/conversions.sh
+++ b/doc/plotsrc/conversions.sh
@@ -13,7 +13,7 @@
 # Original author:
 #     Mohammad Akhlaghi <mohammad@akhlaghi.org>
 # Contributing author(s):
-# Copyright (C) 2015-2018, Free Software Foundation, Inc.
+# Copyright (C) 2015-2019, Free Software Foundation, Inc.
 #
 # Gnuastro is free software: you can redistribute it and/or modify it
 # under the terms of the GNU General Public License as published by
diff --git a/doc/plotsrc/tex/flatplane.tex b/doc/plotsrc/tex/flatplane.tex
index eaef93c..d68d9f7 100644
--- a/doc/plotsrc/tex/flatplane.tex
+++ b/doc/plotsrc/tex/flatplane.tex
@@ -5,7 +5,7 @@
 % Original author:
 %     Mohammad Akhlaghi <mohammad@akhlaghi.org>
 % Contributing author(s):
-% Copyright (C) 2016-2018, Free Software Foundation, Inc.
+% Copyright (C) 2016-2019, Free Software Foundation, Inc.
 %
 % Gnuastro is free software: you can redistribute it and/or modify it
 % under the terms of the GNU General Public License as published by
diff --git a/doc/plotsrc/tex/iandtime.tex b/doc/plotsrc/tex/iandtime.tex
index b1e96b7..1ccea2f 100644
--- a/doc/plotsrc/tex/iandtime.tex
+++ b/doc/plotsrc/tex/iandtime.tex
@@ -5,7 +5,7 @@
 % Original author:
 %     Mohammad Akhlaghi <mohammad@akhlaghi.org>
 % Contributing author(s):
-% Copyright (C) 2015-2018, Free Software Foundation, Inc.
+% Copyright (C) 2015-2019, Free Software Foundation, Inc.
 %
 % Gnuastro is free software: you can redistribute it and/or modify it
 % under the terms of the GNU General Public License as published by
diff --git a/doc/plotsrc/tex/samplingfreq.tex b/doc/plotsrc/tex/samplingfreq.tex
index 9756018..5e34e5d 100644
--- a/doc/plotsrc/tex/samplingfreq.tex
+++ b/doc/plotsrc/tex/samplingfreq.tex
@@ -5,7 +5,7 @@
 % Original author:
 %     Mohammad Akhlaghi <mohammad@akhlaghi.org>
 % Contributing author(s):
-% Copyright (C) 2015-2018, Free Software Foundation, Inc.
+% Copyright (C) 2015-2019, Free Software Foundation, Inc.
 %
 % Gnuastro is free software: you can redistribute it and/or modify it
 % under the terms of the GNU General Public License as published by
diff --git a/doc/plotsrc/tex/sphereandplane.tex 
b/doc/plotsrc/tex/sphereandplane.tex
index 7b909c0..ee27ede 100644
--- a/doc/plotsrc/tex/sphereandplane.tex
+++ b/doc/plotsrc/tex/sphereandplane.tex
@@ -5,7 +5,7 @@
 % Original author:
 %     Mohammad Akhlaghi <mohammad@akhlaghi.org>
 % Contributing author(s):
-% Copyright (C) 2016-2018, Free Software Foundation, Inc.
+% Copyright (C) 2016-2019, Free Software Foundation, Inc.
 %
 % Gnuastro is free software: you can redistribute it and/or modify it
 % under the terms of the GNU General Public License as published by
diff --git a/doc/release-checklist.txt b/doc/release-checklist.txt
index f08dc05..f3c2c65 100644
--- a/doc/release-checklist.txt
+++ b/doc/release-checklist.txt
@@ -72,12 +72,24 @@ all the commits needed for this release have been completed.
      $ git commit
 
 
- - [ALPHA] For alpha, we will only be distributing lzip tarballs. So first
-   remove the `tar.gz' file that was produced by `make distcheck', then
-   make the `tar.lz' that will be distributed.
+ - Update Gnulib and Autoconf archives, then remove all the non-version
+   controlled files and bootstrap Gnuastro:
 
-     $ rm *.tar.gz
-     $ make dist-lzip
+     $ ./bootstrap --copy --gnulib-srcdir=/path/to/updated/gnulib
+
+
+ - Update the version and build Gnuastro, all done with the `-p' option of
+   `./developer-build'. But we'll give it a `pure-junk' directory so it
+   doesn't actually upload the build. Then go into the build directory and
+   run `make distcheck'.
+
+     $ ./developer-build -p pure-junk
+
+
+ - [STABLE] Make sure the tarball doesn't have any problems:
+
+     $ cd build
+     $ make distcheck -j8
 
 
  - [STABLE]: After the `make distcheck' is safely finished, tag the release:
diff --git a/doc/style.css b/doc/style.css
index 6ccdb11..2658ea0 100644
--- a/doc/style.css
+++ b/doc/style.css
@@ -3,7 +3,7 @@
 Original author:
     Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2016-2018 Free Software Foundation, Inc.
+Copyright (C) 2016-2019 Free Software Foundation, Inc.
 
 This stylesheet is free software: you can redistribute it and/or
 modify it under the terms of the GNU General Public Licence as
diff --git a/genauthors b/genauthors
index c50d51a..3a53fc7 100755
--- a/genauthors
+++ b/genauthors
@@ -16,7 +16,7 @@
 # Original author:
 #     Mohammad Akhlaghi <mohammad@akhlaghi.org>
 # Contributing author(s):
-# Copyright (C) 2015-2018, Free Software Foundation, Inc.
+# Copyright (C) 2015-2019, Free Software Foundation, Inc.
 #
 # Gnuastro is free software: you can redistribute it and/or modify it
 # under the terms of the GNU General Public License as published by the
diff --git a/lib/Makefile.am b/lib/Makefile.am
index 8a36723..6677a96 100644
--- a/lib/Makefile.am
+++ b/lib/Makefile.am
@@ -3,7 +3,7 @@
 ## Original author:
 ##     Mohammad Akhlaghi <mohammad@akhlaghi.org>
 ## Contributing author(s):
-## Copyright (C) 2015-2018, Free Software Foundation, Inc.
+## Copyright (C) 2015-2019, Free Software Foundation, Inc.
 ##
 ## Gnuastro is free software: you can redistribute it and/or modify it
 ## under the terms of the GNU General Public License as published by
diff --git a/lib/arithmetic-and.c b/lib/arithmetic-and.c
index 3d144da..2eb6999 100644
--- a/lib/arithmetic-and.c
+++ b/lib/arithmetic-and.c
@@ -5,7 +5,7 @@ This is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2016-2018, Free Software Foundation, Inc.
+Copyright (C) 2016-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/lib/arithmetic-bitand.c b/lib/arithmetic-bitand.c
index c8ffdcf..5aa5845 100644
--- a/lib/arithmetic-bitand.c
+++ b/lib/arithmetic-bitand.c
@@ -5,7 +5,7 @@ This is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2016-2018, Free Software Foundation, Inc.
+Copyright (C) 2016-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/lib/arithmetic-bitlsh.c b/lib/arithmetic-bitlsh.c
index b85d674..14ab5c8 100644
--- a/lib/arithmetic-bitlsh.c
+++ b/lib/arithmetic-bitlsh.c
@@ -5,7 +5,7 @@ This is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2016-2018, Free Software Foundation, Inc.
+Copyright (C) 2016-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/lib/arithmetic-bitor.c b/lib/arithmetic-bitor.c
index a42c1ec..4c9625c 100644
--- a/lib/arithmetic-bitor.c
+++ b/lib/arithmetic-bitor.c
@@ -5,7 +5,7 @@ This is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2016-2018, Free Software Foundation, Inc.
+Copyright (C) 2016-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/lib/arithmetic-bitrsh.c b/lib/arithmetic-bitrsh.c
index ab21cc0..c74c666 100644
--- a/lib/arithmetic-bitrsh.c
+++ b/lib/arithmetic-bitrsh.c
@@ -5,7 +5,7 @@ This is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2016-2018, Free Software Foundation, Inc.
+Copyright (C) 2016-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/lib/arithmetic-bitxor.c b/lib/arithmetic-bitxor.c
index 60073e3..e2fd3ce 100644
--- a/lib/arithmetic-bitxor.c
+++ b/lib/arithmetic-bitxor.c
@@ -5,7 +5,7 @@ This is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2016-2018, Free Software Foundation, Inc.
+Copyright (C) 2016-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/lib/arithmetic-divide.c b/lib/arithmetic-divide.c
index e69a21b..7838392 100644
--- a/lib/arithmetic-divide.c
+++ b/lib/arithmetic-divide.c
@@ -5,7 +5,7 @@ This is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2016-2018, Free Software Foundation, Inc.
+Copyright (C) 2016-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/lib/arithmetic-eq.c b/lib/arithmetic-eq.c
index 6ec7645..7003924 100644
--- a/lib/arithmetic-eq.c
+++ b/lib/arithmetic-eq.c
@@ -5,7 +5,7 @@ This is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2016-2018, Free Software Foundation, Inc.
+Copyright (C) 2016-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/lib/arithmetic-ge.c b/lib/arithmetic-ge.c
index 1f1bb58..66f47ee 100644
--- a/lib/arithmetic-ge.c
+++ b/lib/arithmetic-ge.c
@@ -5,7 +5,7 @@ This is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2016-2018, Free Software Foundation, Inc.
+Copyright (C) 2016-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/lib/arithmetic-gt.c b/lib/arithmetic-gt.c
index b0d66ab..353e2b1 100644
--- a/lib/arithmetic-gt.c
+++ b/lib/arithmetic-gt.c
@@ -5,7 +5,7 @@ This is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2016-2018, Free Software Foundation, Inc.
+Copyright (C) 2016-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/lib/arithmetic-le.c b/lib/arithmetic-le.c
index a34cd2d..0457eca 100644
--- a/lib/arithmetic-le.c
+++ b/lib/arithmetic-le.c
@@ -5,7 +5,7 @@ This is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2016-2018, Free Software Foundation, Inc.
+Copyright (C) 2016-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/lib/arithmetic-lt.c b/lib/arithmetic-lt.c
index ecd661c..3c0f1ae 100644
--- a/lib/arithmetic-lt.c
+++ b/lib/arithmetic-lt.c
@@ -5,7 +5,7 @@ This is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2016-2018, Free Software Foundation, Inc.
+Copyright (C) 2016-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/lib/arithmetic-minus.c b/lib/arithmetic-minus.c
index 2d11902..bbd083d 100644
--- a/lib/arithmetic-minus.c
+++ b/lib/arithmetic-minus.c
@@ -5,7 +5,7 @@ This is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2016-2018, Free Software Foundation, Inc.
+Copyright (C) 2016-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/lib/arithmetic-modulo.c b/lib/arithmetic-modulo.c
index 862218f..93fa0e4 100644
--- a/lib/arithmetic-modulo.c
+++ b/lib/arithmetic-modulo.c
@@ -5,7 +5,7 @@ This is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2016-2018, Free Software Foundation, Inc.
+Copyright (C) 2016-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/lib/arithmetic-multiply.c b/lib/arithmetic-multiply.c
index a714b58..28e784b 100644
--- a/lib/arithmetic-multiply.c
+++ b/lib/arithmetic-multiply.c
@@ -5,7 +5,7 @@ This is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2016-2018, Free Software Foundation, Inc.
+Copyright (C) 2016-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/lib/arithmetic-ne.c b/lib/arithmetic-ne.c
index ba97352..c695f8f 100644
--- a/lib/arithmetic-ne.c
+++ b/lib/arithmetic-ne.c
@@ -5,7 +5,7 @@ This is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2016-2018, Free Software Foundation, Inc.
+Copyright (C) 2016-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/lib/arithmetic-or.c b/lib/arithmetic-or.c
index 716469e..6117006 100644
--- a/lib/arithmetic-or.c
+++ b/lib/arithmetic-or.c
@@ -5,7 +5,7 @@ This is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2016-2018, Free Software Foundation, Inc.
+Copyright (C) 2016-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/lib/arithmetic-plus.c b/lib/arithmetic-plus.c
index 611d04d..abe84cb 100644
--- a/lib/arithmetic-plus.c
+++ b/lib/arithmetic-plus.c
@@ -5,7 +5,7 @@ This is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2016-2018, Free Software Foundation, Inc.
+Copyright (C) 2016-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/lib/arithmetic.c b/lib/arithmetic.c
index d2b0f3b..cb975be 100644
--- a/lib/arithmetic.c
+++ b/lib/arithmetic.c
@@ -5,7 +5,7 @@ This is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2016-2018, Free Software Foundation, Inc.
+Copyright (C) 2016-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/lib/array.c b/lib/array.c
index c6db2f5..27271ec 100644
--- a/lib/array.c
+++ b/lib/array.c
@@ -5,7 +5,7 @@ This is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2018, Free Software Foundation, Inc.
+Copyright (C) 2018-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/lib/binary.c b/lib/binary.c
index cc53996..32657af 100644
--- a/lib/binary.c
+++ b/lib/binary.c
@@ -5,7 +5,7 @@ This is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2016-2018, Free Software Foundation, Inc.
+Copyright (C) 2016-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/lib/blank.c b/lib/blank.c
index b3c2bb7..cbf5658 100644
--- a/lib/blank.c
+++ b/lib/blank.c
@@ -5,7 +5,7 @@ This is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2017-2018, Free Software Foundation, Inc.
+Copyright (C) 2017-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/lib/box.c b/lib/box.c
index 407700b..035bc14 100644
--- a/lib/box.c
+++ b/lib/box.c
@@ -5,7 +5,7 @@ This is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2015-2018, Free Software Foundation, Inc.
+Copyright (C) 2015-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/lib/checkset.c b/lib/checkset.c
index 063de37..1ec0684 100644
--- a/lib/checkset.c
+++ b/lib/checkset.c
@@ -5,7 +5,7 @@ This is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2015-2018, Free Software Foundation, Inc.
+Copyright (C) 2015-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/lib/convolve.c b/lib/convolve.c
index 0423b55..dd1ccbb 100644
--- a/lib/convolve.c
+++ b/lib/convolve.c
@@ -5,7 +5,7 @@ This is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2017-2018, Free Software Foundation, Inc.
+Copyright (C) 2017-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
@@ -509,7 +509,7 @@ gal_convolve_spatial_general(gal_data_t *tiles, gal_data_t 
*kernel,
     error(EXIT_FAILURE, 0, "%s: the input is a linked list but not a "
           "tessellation (a list of tiles). This function is optimized to "
           "work on a list of tiles. Please (temporarily) set the `next' "
-          "element of the input to `NULL' and call this funciton again",
+          "element of the input to `NULL' and call this function again",
           __func__);
 
 
diff --git a/lib/cosmology.c b/lib/cosmology.c
index c4d8b1e..3d3a65c 100644
--- a/lib/cosmology.c
+++ b/lib/cosmology.c
@@ -5,7 +5,7 @@ This is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2015-2018, Free Software Foundation, Inc.
+Copyright (C) 2015-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/lib/data.c b/lib/data.c
index 96f7f37..36de43a 100644
--- a/lib/data.c
+++ b/lib/data.c
@@ -5,7 +5,7 @@ This is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2016-2018, Free Software Foundation, Inc.
+Copyright (C) 2016-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/lib/dimension.c b/lib/dimension.c
index ec677cb..070265e 100644
--- a/lib/dimension.c
+++ b/lib/dimension.c
@@ -5,7 +5,7 @@ This is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2017-2018, Free Software Foundation, Inc.
+Copyright (C) 2017-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/lib/eps.c b/lib/eps.c
index 7a530b4..b787d5e 100644
--- a/lib/eps.c
+++ b/lib/eps.c
@@ -5,7 +5,7 @@ This is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2015-2018, Free Software Foundation, Inc.
+Copyright (C) 2015-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/lib/fits.c b/lib/fits.c
index 5f724c0..671b828 100644
--- a/lib/fits.c
+++ b/lib/fits.c
@@ -5,7 +5,7 @@ This is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2015-2018, Free Software Foundation, Inc.
+Copyright (C) 2015-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
@@ -1319,14 +1319,28 @@ gal_fits_key_write_filename(char *keynamebase, char 
*filename,
 void
 gal_fits_key_write_wcsstr(fitsfile *fptr, char *wcsstr, int nkeyrec)
 {
-  int h, status=0;
+  size_t i;
+  int status=0;
+  char *keystart;
 
   /* Write the title. */
   gal_fits_key_write_title_in_ptr("World Coordinate System (WCS)", fptr);
 
   /* Write the keywords one by one: */
-  for(h=0;h<nkeyrec-1;++h)
-    fits_write_record(fptr, &wcsstr[h*80], &status);
+  for(i=0;i<nkeyrec;++i)
+    {
+      /* Set the start of this header. */
+      keystart=&wcsstr[i*80];
+
+      /* Write it if it isn't blank (first character is a space), or not a
+         comment (first 7 characters equal to `COMMENT'). The reason is
+         that WCSLIB adds a blank line and a `COMMENT' keyword saying its
+         own version. But Gnuastro writes the version of WCSLIB as a
+         separate keyword along with all other important software, so it is
+         redundant and just makes the keywrods hard to read by eye.*/
+      if( keystart[0]!=' ' && strncmp(keystart, "COMMENT", 7) )
+        fits_write_record(fptr, keystart, &status);
+    }
   gal_fits_io_error(status, NULL);
 }
 
diff --git a/lib/git.c b/lib/git.c
index e63a981..57d29e3 100644
--- a/lib/git.c
+++ b/lib/git.c
@@ -5,7 +5,7 @@ This is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2016-2018, Free Software Foundation, Inc.
+Copyright (C) 2016-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/lib/gnuastro-internal/arithmetic-and.h 
b/lib/gnuastro-internal/arithmetic-and.h
index c17df8f..44ef3df 100644
--- a/lib/gnuastro-internal/arithmetic-and.h
+++ b/lib/gnuastro-internal/arithmetic-and.h
@@ -5,7 +5,7 @@ This is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2015-2018, Free Software Foundation, Inc.
+Copyright (C) 2015-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/lib/gnuastro-internal/arithmetic-binary.h 
b/lib/gnuastro-internal/arithmetic-binary.h
index e8e35b5..010e874 100644
--- a/lib/gnuastro-internal/arithmetic-binary.h
+++ b/lib/gnuastro-internal/arithmetic-binary.h
@@ -5,7 +5,7 @@ This is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2015-2018, Free Software Foundation, Inc.
+Copyright (C) 2015-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/lib/gnuastro-internal/arithmetic-bitand.h 
b/lib/gnuastro-internal/arithmetic-bitand.h
index 1dcbf6f..aa563bc 100644
--- a/lib/gnuastro-internal/arithmetic-bitand.h
+++ b/lib/gnuastro-internal/arithmetic-bitand.h
@@ -5,7 +5,7 @@ This is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2015-2018, Free Software Foundation, Inc.
+Copyright (C) 2015-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/lib/gnuastro-internal/arithmetic-bitlsh.h 
b/lib/gnuastro-internal/arithmetic-bitlsh.h
index da8278b..86998dc 100644
--- a/lib/gnuastro-internal/arithmetic-bitlsh.h
+++ b/lib/gnuastro-internal/arithmetic-bitlsh.h
@@ -5,7 +5,7 @@ This is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2015-2018, Free Software Foundation, Inc.
+Copyright (C) 2015-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/lib/gnuastro-internal/arithmetic-bitor.h 
b/lib/gnuastro-internal/arithmetic-bitor.h
index f4cf58b..9cd5133 100644
--- a/lib/gnuastro-internal/arithmetic-bitor.h
+++ b/lib/gnuastro-internal/arithmetic-bitor.h
@@ -5,7 +5,7 @@ This is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2015-2018, Free Software Foundation, Inc.
+Copyright (C) 2015-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/lib/gnuastro-internal/arithmetic-bitrsh.h 
b/lib/gnuastro-internal/arithmetic-bitrsh.h
index d9139e8..b129458 100644
--- a/lib/gnuastro-internal/arithmetic-bitrsh.h
+++ b/lib/gnuastro-internal/arithmetic-bitrsh.h
@@ -5,7 +5,7 @@ This is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2015-2018, Free Software Foundation, Inc.
+Copyright (C) 2015-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/lib/gnuastro-internal/arithmetic-bitxor.h 
b/lib/gnuastro-internal/arithmetic-bitxor.h
index c788e7b..857a43b 100644
--- a/lib/gnuastro-internal/arithmetic-bitxor.h
+++ b/lib/gnuastro-internal/arithmetic-bitxor.h
@@ -5,7 +5,7 @@ This is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2015-2018, Free Software Foundation, Inc.
+Copyright (C) 2015-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/lib/gnuastro-internal/arithmetic-divide.h 
b/lib/gnuastro-internal/arithmetic-divide.h
index af2e6a9..d521e5a 100644
--- a/lib/gnuastro-internal/arithmetic-divide.h
+++ b/lib/gnuastro-internal/arithmetic-divide.h
@@ -5,7 +5,7 @@ This is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2015-2018, Free Software Foundation, Inc.
+Copyright (C) 2015-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/lib/gnuastro-internal/arithmetic-eq.h 
b/lib/gnuastro-internal/arithmetic-eq.h
index 6852819..716c041 100644
--- a/lib/gnuastro-internal/arithmetic-eq.h
+++ b/lib/gnuastro-internal/arithmetic-eq.h
@@ -5,7 +5,7 @@ This is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2015-2018, Free Software Foundation, Inc.
+Copyright (C) 2015-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/lib/gnuastro-internal/arithmetic-ge.h 
b/lib/gnuastro-internal/arithmetic-ge.h
index bab3a09..9b53546 100644
--- a/lib/gnuastro-internal/arithmetic-ge.h
+++ b/lib/gnuastro-internal/arithmetic-ge.h
@@ -5,7 +5,7 @@ This is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2015-2018, Free Software Foundation, Inc.
+Copyright (C) 2015-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/lib/gnuastro-internal/arithmetic-gt.h 
b/lib/gnuastro-internal/arithmetic-gt.h
index e5f7bc0..aaaa6d5 100644
--- a/lib/gnuastro-internal/arithmetic-gt.h
+++ b/lib/gnuastro-internal/arithmetic-gt.h
@@ -5,7 +5,7 @@ This is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2015-2018, Free Software Foundation, Inc.
+Copyright (C) 2015-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/lib/gnuastro-internal/arithmetic-internal.h 
b/lib/gnuastro-internal/arithmetic-internal.h
index 0736465..f9d2bdd 100644
--- a/lib/gnuastro-internal/arithmetic-internal.h
+++ b/lib/gnuastro-internal/arithmetic-internal.h
@@ -5,7 +5,7 @@ This is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2017-2018, Free Software Foundation, Inc.
+Copyright (C) 2017-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/lib/gnuastro-internal/arithmetic-le.h 
b/lib/gnuastro-internal/arithmetic-le.h
index b67c205..857b6db 100644
--- a/lib/gnuastro-internal/arithmetic-le.h
+++ b/lib/gnuastro-internal/arithmetic-le.h
@@ -5,7 +5,7 @@ This is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2015-2018, Free Software Foundation, Inc.
+Copyright (C) 2015-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/lib/gnuastro-internal/arithmetic-lt.h 
b/lib/gnuastro-internal/arithmetic-lt.h
index ebc3872..3238df2 100644
--- a/lib/gnuastro-internal/arithmetic-lt.h
+++ b/lib/gnuastro-internal/arithmetic-lt.h
@@ -5,7 +5,7 @@ This is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2015-2018, Free Software Foundation, Inc.
+Copyright (C) 2015-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/lib/gnuastro-internal/arithmetic-minus.h 
b/lib/gnuastro-internal/arithmetic-minus.h
index 8d5b70c..a7a0a79 100644
--- a/lib/gnuastro-internal/arithmetic-minus.h
+++ b/lib/gnuastro-internal/arithmetic-minus.h
@@ -5,7 +5,7 @@ This is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2015-2018, Free Software Foundation, Inc.
+Copyright (C) 2015-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/lib/gnuastro-internal/arithmetic-modulo.h 
b/lib/gnuastro-internal/arithmetic-modulo.h
index 6e6ca80..2448c60 100644
--- a/lib/gnuastro-internal/arithmetic-modulo.h
+++ b/lib/gnuastro-internal/arithmetic-modulo.h
@@ -5,7 +5,7 @@ This is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2015-2018, Free Software Foundation, Inc.
+Copyright (C) 2015-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/lib/gnuastro-internal/arithmetic-multiply.h 
b/lib/gnuastro-internal/arithmetic-multiply.h
index a4396c8..c67a75b 100644
--- a/lib/gnuastro-internal/arithmetic-multiply.h
+++ b/lib/gnuastro-internal/arithmetic-multiply.h
@@ -5,7 +5,7 @@ This is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2015-2018, Free Software Foundation, Inc.
+Copyright (C) 2015-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/lib/gnuastro-internal/arithmetic-ne.h 
b/lib/gnuastro-internal/arithmetic-ne.h
index 25a1469..9a564f6 100644
--- a/lib/gnuastro-internal/arithmetic-ne.h
+++ b/lib/gnuastro-internal/arithmetic-ne.h
@@ -5,7 +5,7 @@ This is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2015-2018, Free Software Foundation, Inc.
+Copyright (C) 2015-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/lib/gnuastro-internal/arithmetic-or.h 
b/lib/gnuastro-internal/arithmetic-or.h
index 772f3b6..188c69b 100644
--- a/lib/gnuastro-internal/arithmetic-or.h
+++ b/lib/gnuastro-internal/arithmetic-or.h
@@ -5,7 +5,7 @@ This is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2015-2018, Free Software Foundation, Inc.
+Copyright (C) 2015-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/lib/gnuastro-internal/arithmetic-plus.h 
b/lib/gnuastro-internal/arithmetic-plus.h
index cddfe9c..339d113 100644
--- a/lib/gnuastro-internal/arithmetic-plus.h
+++ b/lib/gnuastro-internal/arithmetic-plus.h
@@ -5,7 +5,7 @@ This is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2015-2018, Free Software Foundation, Inc.
+Copyright (C) 2015-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/lib/gnuastro-internal/checkset.h b/lib/gnuastro-internal/checkset.h
index e528b6e..93eec4f 100644
--- a/lib/gnuastro-internal/checkset.h
+++ b/lib/gnuastro-internal/checkset.h
@@ -5,7 +5,7 @@ This is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2015-2018, Free Software Foundation, Inc.
+Copyright (C) 2015-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/lib/gnuastro-internal/commonopts.h 
b/lib/gnuastro-internal/commonopts.h
index 50f3397..1939e69 100644
--- a/lib/gnuastro-internal/commonopts.h
+++ b/lib/gnuastro-internal/commonopts.h
@@ -6,7 +6,7 @@ IMPORTANT: This header must only be included the programs, not 
libraries.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2017-2018, Free Software Foundation, Inc.
+Copyright (C) 2017-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/lib/gnuastro-internal/config.h.in 
b/lib/gnuastro-internal/config.h.in
index 1964fb3..14fa844 100644
--- a/lib/gnuastro-internal/config.h.in
+++ b/lib/gnuastro-internal/config.h.in
@@ -4,7 +4,7 @@ Functions dealing with general aspects of all Gnuastro.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2016-2018, Free Software Foundation, Inc.
+Copyright (C) 2016-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/lib/gnuastro-internal/fixedstringmacros.h 
b/lib/gnuastro-internal/fixedstringmacros.h
index 479651e..66228cb 100644
--- a/lib/gnuastro-internal/fixedstringmacros.h
+++ b/lib/gnuastro-internal/fixedstringmacros.h
@@ -5,7 +5,7 @@ This is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2015-2018, Free Software Foundation, Inc.
+Copyright (C) 2015-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
@@ -26,7 +26,7 @@ along with Gnuastro. If not, see 
<http://www.gnu.org/licenses/>.
 
 
 #define GAL_STRINGS_SHORT_COPYRIGHT                                     \
-  "Copyright (C) 2015-2018, Free Software Foundation, Inc."
+  "Copyright (C) 2015-2019, Free Software Foundation, Inc."
 
 
 #define GAL_STRINGS_SHORT_LICENSE                                       \
diff --git a/lib/gnuastro-internal/options.h b/lib/gnuastro-internal/options.h
index 5c524be..1e813a5 100644
--- a/lib/gnuastro-internal/options.h
+++ b/lib/gnuastro-internal/options.h
@@ -4,7 +4,7 @@ Function to parse options and configuration file values.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2017-2018, Free Software Foundation, Inc.
+Copyright (C) 2017-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/lib/gnuastro-internal/tableintern.h 
b/lib/gnuastro-internal/tableintern.h
index 7ade57d..fdfddee 100644
--- a/lib/gnuastro-internal/tableintern.h
+++ b/lib/gnuastro-internal/tableintern.h
@@ -5,7 +5,7 @@ This is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2015-2018, Free Software Foundation, Inc.
+Copyright (C) 2015-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/lib/gnuastro-internal/tile-internal.h 
b/lib/gnuastro-internal/tile-internal.h
index 83c55ec..dfa402b 100644
--- a/lib/gnuastro-internal/tile-internal.h
+++ b/lib/gnuastro-internal/tile-internal.h
@@ -6,7 +6,7 @@ This is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2018, Free Software Foundation, Inc.
+Copyright (C) 2018-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/lib/gnuastro-internal/timing.h b/lib/gnuastro-internal/timing.h
index 245b1a0..9b36e18 100644
--- a/lib/gnuastro-internal/timing.h
+++ b/lib/gnuastro-internal/timing.h
@@ -5,7 +5,7 @@ This is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2015-2018, Free Software Foundation, Inc.
+Copyright (C) 2015-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/lib/gnuastro/arithmetic.h b/lib/gnuastro/arithmetic.h
index 2e8e058..56beedf 100644
--- a/lib/gnuastro/arithmetic.h
+++ b/lib/gnuastro/arithmetic.h
@@ -5,7 +5,7 @@ This is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2017-2018, Free Software Foundation, Inc.
+Copyright (C) 2017-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/lib/gnuastro/array.h b/lib/gnuastro/array.h
index 9b92fc1..dd43a8b 100644
--- a/lib/gnuastro/array.h
+++ b/lib/gnuastro/array.h
@@ -5,7 +5,7 @@ This is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2018, Free Software Foundation, Inc.
+Copyright (C) 2018-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/lib/gnuastro/binary.h b/lib/gnuastro/binary.h
index 5766123..5a4b391 100644
--- a/lib/gnuastro/binary.h
+++ b/lib/gnuastro/binary.h
@@ -5,7 +5,7 @@ This is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2017-2018, Free Software Foundation, Inc.
+Copyright (C) 2017-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/lib/gnuastro/blank.h b/lib/gnuastro/blank.h
index 7e36214..3ccc206 100644
--- a/lib/gnuastro/blank.h
+++ b/lib/gnuastro/blank.h
@@ -5,7 +5,7 @@ This is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2017-2018, Free Software Foundation, Inc.
+Copyright (C) 2017-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
@@ -81,6 +81,14 @@ __BEGIN_C_DECLS  /* From C++ preparations */
 #define GAL_BLANK_SIZE_T     GAL_BLANK_UINT64
 #endif
 
+#if GAL_CONFIG_SIZEOF_LONG == 4
+#define GAL_BLANK_LONG  GAL_BLANK_INT32
+#define GAL_BLANK_ULONG GAL_BLANK_UINT32
+#elif GAL_CONFIG_SIZEOF_LONG == 8
+#define GAL_BLANK_LONG  GAL_BLANK_INT64
+#define GAL_BLANK_ULONG GAL_BLANK_UINT64
+#endif
+
 
 /* Functions. */
 void
diff --git a/lib/gnuastro/box.h b/lib/gnuastro/box.h
index 4e7fbbe..ee79a83 100644
--- a/lib/gnuastro/box.h
+++ b/lib/gnuastro/box.h
@@ -5,7 +5,7 @@ This is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2015-2018, Free Software Foundation, Inc.
+Copyright (C) 2015-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/lib/gnuastro/convolve.h b/lib/gnuastro/convolve.h
index addf8b8..8e61940 100644
--- a/lib/gnuastro/convolve.h
+++ b/lib/gnuastro/convolve.h
@@ -5,7 +5,7 @@ This is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2017-2018, Free Software Foundation, Inc.
+Copyright (C) 2017-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/lib/gnuastro/cosmology.h b/lib/gnuastro/cosmology.h
index 377dd19..b7568ad 100644
--- a/lib/gnuastro/cosmology.h
+++ b/lib/gnuastro/cosmology.h
@@ -5,7 +5,7 @@ This is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2015-2018, Free Software Foundation, Inc.
+Copyright (C) 2015-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/lib/gnuastro/data.h b/lib/gnuastro/data.h
index 32adbd7..c81bcc2 100644
--- a/lib/gnuastro/data.h
+++ b/lib/gnuastro/data.h
@@ -5,7 +5,7 @@ This is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2015-2018, Free Software Foundation, Inc.
+Copyright (C) 2015-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/lib/gnuastro/dimension.h b/lib/gnuastro/dimension.h
index 46e68fa..205820a 100644
--- a/lib/gnuastro/dimension.h
+++ b/lib/gnuastro/dimension.h
@@ -5,7 +5,7 @@ This is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2017-2018, Free Software Foundation, Inc.
+Copyright (C) 2017-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/lib/gnuastro/eps.h b/lib/gnuastro/eps.h
index ab8ed3d..f2a6d3f 100644
--- a/lib/gnuastro/eps.h
+++ b/lib/gnuastro/eps.h
@@ -5,7 +5,7 @@ This is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2015-2018, Free Software Foundation, Inc.
+Copyright (C) 2015-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/lib/gnuastro/fits.h b/lib/gnuastro/fits.h
index c37c6c0..3816b39 100644
--- a/lib/gnuastro/fits.h
+++ b/lib/gnuastro/fits.h
@@ -5,7 +5,7 @@ This is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2015-2018, Free Software Foundation, Inc.
+Copyright (C) 2015-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/lib/gnuastro/git.h b/lib/gnuastro/git.h
index 4f8f334..f3c4f8d 100644
--- a/lib/gnuastro/git.h
+++ b/lib/gnuastro/git.h
@@ -5,7 +5,7 @@ This is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2015-2018, Free Software Foundation, Inc.
+Copyright (C) 2015-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/lib/gnuastro/interpolate.h b/lib/gnuastro/interpolate.h
index 53979a1..1c72730 100644
--- a/lib/gnuastro/interpolate.h
+++ b/lib/gnuastro/interpolate.h
@@ -5,7 +5,7 @@ This is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2017-2018, Free Software Foundation, Inc.
+Copyright (C) 2017-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/lib/gnuastro/jpeg.h b/lib/gnuastro/jpeg.h
index 52c1cc7..0a66267 100644
--- a/lib/gnuastro/jpeg.h
+++ b/lib/gnuastro/jpeg.h
@@ -5,7 +5,7 @@ This is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2015-2018, Free Software Foundation, Inc.
+Copyright (C) 2015-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/lib/gnuastro/label.h b/lib/gnuastro/label.h
index fb21aa5..314a7f4 100644
--- a/lib/gnuastro/label.h
+++ b/lib/gnuastro/label.h
@@ -5,7 +5,7 @@ This is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2018, Free Software Foundation, Inc.
+Copyright (C) 2018-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/lib/gnuastro/list.h b/lib/gnuastro/list.h
index 492e189..e0f790e 100644
--- a/lib/gnuastro/list.h
+++ b/lib/gnuastro/list.h
@@ -5,7 +5,7 @@ This is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2015-2018, Free Software Foundation, Inc.
+Copyright (C) 2015-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/lib/gnuastro/match.h b/lib/gnuastro/match.h
index a876bec..cb3cf56 100644
--- a/lib/gnuastro/match.h
+++ b/lib/gnuastro/match.h
@@ -5,7 +5,7 @@ This is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2017-2018, Free Software Foundation, Inc.
+Copyright (C) 2017-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/lib/gnuastro/pdf.h b/lib/gnuastro/pdf.h
index 033a8e4..1987127 100644
--- a/lib/gnuastro/pdf.h
+++ b/lib/gnuastro/pdf.h
@@ -5,7 +5,7 @@ This is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2015-2018, Free Software Foundation, Inc.
+Copyright (C) 2015-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/lib/gnuastro/permutation.h b/lib/gnuastro/permutation.h
index c1ad46e..ba73d87 100644
--- a/lib/gnuastro/permutation.h
+++ b/lib/gnuastro/permutation.h
@@ -5,7 +5,7 @@ This is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2017-2018, Free Software Foundation, Inc.
+Copyright (C) 2017-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/lib/gnuastro/pointer.h b/lib/gnuastro/pointer.h
index e4292e6..1a05e52 100644
--- a/lib/gnuastro/pointer.h
+++ b/lib/gnuastro/pointer.h
@@ -5,7 +5,7 @@ This is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2017-2018, Free Software Foundation, Inc.
+Copyright (C) 2017-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/lib/gnuastro/polygon.h b/lib/gnuastro/polygon.h
index b3f3ff8..70fe416 100644
--- a/lib/gnuastro/polygon.h
+++ b/lib/gnuastro/polygon.h
@@ -5,7 +5,7 @@ This is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2015-2018, Free Software Foundation, Inc.
+Copyright (C) 2015-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/lib/gnuastro/qsort.h b/lib/gnuastro/qsort.h
index c6e8b76..2437b95 100644
--- a/lib/gnuastro/qsort.h
+++ b/lib/gnuastro/qsort.h
@@ -5,7 +5,7 @@ This is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2015-2018, Free Software Foundation, Inc.
+Copyright (C) 2015-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/lib/gnuastro/statistics.h b/lib/gnuastro/statistics.h
index ec3ecd2..ded7540 100644
--- a/lib/gnuastro/statistics.h
+++ b/lib/gnuastro/statistics.h
@@ -5,7 +5,7 @@ This is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2015-2018, Free Software Foundation, Inc.
+Copyright (C) 2015-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/lib/gnuastro/table.h b/lib/gnuastro/table.h
index 68b2012..ed183a9 100644
--- a/lib/gnuastro/table.h
+++ b/lib/gnuastro/table.h
@@ -5,7 +5,7 @@ This is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2015-2018, Free Software Foundation, Inc.
+Copyright (C) 2015-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/lib/gnuastro/threads.h b/lib/gnuastro/threads.h
index 75daac0..605c264 100644
--- a/lib/gnuastro/threads.h
+++ b/lib/gnuastro/threads.h
@@ -5,7 +5,7 @@ This is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2015-2018, Free Software Foundation, Inc.
+Copyright (C) 2015-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/lib/gnuastro/tiff.h b/lib/gnuastro/tiff.h
index 2e2b008..2b953b4 100644
--- a/lib/gnuastro/tiff.h
+++ b/lib/gnuastro/tiff.h
@@ -5,7 +5,7 @@ This is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2018, Free Software Foundation, Inc.
+Copyright (C) 2018-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/lib/gnuastro/tile.h b/lib/gnuastro/tile.h
index 2699142..59fe387 100644
--- a/lib/gnuastro/tile.h
+++ b/lib/gnuastro/tile.h
@@ -5,7 +5,7 @@ This is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2017-2018, Free Software Foundation, Inc.
+Copyright (C) 2017-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/lib/gnuastro/txt.h b/lib/gnuastro/txt.h
index 4429b00..8371fb8 100644
--- a/lib/gnuastro/txt.h
+++ b/lib/gnuastro/txt.h
@@ -5,7 +5,7 @@ This is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2015-2018, Free Software Foundation, Inc.
+Copyright (C) 2015-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/lib/gnuastro/type.h b/lib/gnuastro/type.h
index e3ae316..a57214e 100644
--- a/lib/gnuastro/type.h
+++ b/lib/gnuastro/type.h
@@ -5,7 +5,7 @@ This is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2015-2018, Free Software Foundation, Inc.
+Copyright (C) 2015-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/lib/gnuastro/wcs.h b/lib/gnuastro/wcs.h
index 13c2bb5..7395dfd 100644
--- a/lib/gnuastro/wcs.h
+++ b/lib/gnuastro/wcs.h
@@ -5,7 +5,7 @@ This is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2015-2018, Free Software Foundation, Inc.
+Copyright (C) 2015-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/lib/interpolate.c b/lib/interpolate.c
index 319fde9..8cd99c5 100644
--- a/lib/interpolate.c
+++ b/lib/interpolate.c
@@ -5,7 +5,7 @@ This is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2017-2018, Free Software Foundation, Inc.
+Copyright (C) 2017-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/lib/jpeg.c b/lib/jpeg.c
index f89c6d0..c7c5151 100644
--- a/lib/jpeg.c
+++ b/lib/jpeg.c
@@ -5,7 +5,7 @@ This is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2015-2018, Free Software Foundation, Inc.
+Copyright (C) 2015-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/lib/label.c b/lib/label.c
index eb4d4c9..6799608 100644
--- a/lib/label.c
+++ b/lib/label.c
@@ -5,7 +5,7 @@ This is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2018, Free Software Foundation, Inc.
+Copyright (C) 2018-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/lib/list.c b/lib/list.c
index 4197690..1c84a7c 100644
--- a/lib/list.c
+++ b/lib/list.c
@@ -5,7 +5,7 @@ This is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2015-2018, Free Software Foundation, Inc.
+Copyright (C) 2015-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/lib/match.c b/lib/match.c
index 1f7b6dd..0d7de57 100644
--- a/lib/match.c
+++ b/lib/match.c
@@ -5,7 +5,7 @@ This is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2017-2018, Free Software Foundation, Inc.
+Copyright (C) 2017-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/lib/options.c b/lib/options.c
index 4e70df9..59c52c0 100644
--- a/lib/options.c
+++ b/lib/options.c
@@ -4,7 +4,7 @@ Function to parse options and configuration file values.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2017-2018, Free Software Foundation, Inc.
+Copyright (C) 2017-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/lib/pdf.c b/lib/pdf.c
index 794a9f5..b090267 100644
--- a/lib/pdf.c
+++ b/lib/pdf.c
@@ -5,7 +5,7 @@ This is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2015-2018, Free Software Foundation, Inc.
+Copyright (C) 2015-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/lib/permutation.c b/lib/permutation.c
index 363cd6a..470e240 100644
--- a/lib/permutation.c
+++ b/lib/permutation.c
@@ -5,7 +5,7 @@ This is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2017-2018, Free Software Foundation, Inc.
+Copyright (C) 2017-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/lib/pointer.c b/lib/pointer.c
index 9727874..3e09cd1 100644
--- a/lib/pointer.c
+++ b/lib/pointer.c
@@ -5,7 +5,7 @@ This is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2016-2018, Free Software Foundation, Inc.
+Copyright (C) 2016-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/lib/polygon.c b/lib/polygon.c
index 1bd4bfa..75057ef 100644
--- a/lib/polygon.c
+++ b/lib/polygon.c
@@ -5,7 +5,7 @@ This is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2015-2018, Free Software Foundation, Inc.
+Copyright (C) 2015-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/lib/qsort.c b/lib/qsort.c
index 59e5a59..b7725c3 100644
--- a/lib/qsort.c
+++ b/lib/qsort.c
@@ -5,7 +5,7 @@ This is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2015-2018, Free Software Foundation, Inc.
+Copyright (C) 2015-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/lib/statistics.c b/lib/statistics.c
index dbe0326..61888e1 100644
--- a/lib/statistics.c
+++ b/lib/statistics.c
@@ -5,7 +5,7 @@ This is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2015-2018, Free Software Foundation, Inc.
+Copyright (C) 2015-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/lib/table.c b/lib/table.c
index 69246ae..afc3d21 100644
--- a/lib/table.c
+++ b/lib/table.c
@@ -5,7 +5,7 @@ This is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2016-2018, Free Software Foundation, Inc.
+Copyright (C) 2016-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/lib/tableintern.c b/lib/tableintern.c
index a014bcb..f1c8e8b 100644
--- a/lib/tableintern.c
+++ b/lib/tableintern.c
@@ -5,7 +5,7 @@ This is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2016-2018, Free Software Foundation, Inc.
+Copyright (C) 2016-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/lib/threads.c b/lib/threads.c
index 433ce33..4aeaaf6 100644
--- a/lib/threads.c
+++ b/lib/threads.c
@@ -5,7 +5,7 @@ This is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2015-2018, Free Software Foundation, Inc.
+Copyright (C) 2015-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/lib/tiff.c b/lib/tiff.c
index bc1467d..3e9894b 100644
--- a/lib/tiff.c
+++ b/lib/tiff.c
@@ -5,7 +5,7 @@ This is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2018, Free Software Foundation, Inc.
+Copyright (C) 2018-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/lib/tile-internal.c b/lib/tile-internal.c
index 7a83e6d..ed9e051 100644
--- a/lib/tile-internal.c
+++ b/lib/tile-internal.c
@@ -6,7 +6,7 @@ This is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2018, Free Software Foundation, Inc.
+Copyright (C) 2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/lib/tile.c b/lib/tile.c
index a37ece9..9a1629f 100644
--- a/lib/tile.c
+++ b/lib/tile.c
@@ -5,7 +5,7 @@ This is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2017-2018, Free Software Foundation, Inc.
+Copyright (C) 2017-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/lib/timing.c b/lib/timing.c
index 86b66e4..23dfd0d 100644
--- a/lib/timing.c
+++ b/lib/timing.c
@@ -5,7 +5,7 @@ This is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2015-2018, Free Software Foundation, Inc.
+Copyright (C) 2015-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/lib/txt.c b/lib/txt.c
index a9fe6b9..4404e2f 100644
--- a/lib/txt.c
+++ b/lib/txt.c
@@ -5,7 +5,7 @@ This is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2016-2018, Free Software Foundation, Inc.
+Copyright (C) 2016-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/lib/type.c b/lib/type.c
index 5a42e84..560a305 100644
--- a/lib/type.c
+++ b/lib/type.c
@@ -5,7 +5,7 @@ This is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2016-2018, Free Software Foundation, Inc.
+Copyright (C) 2016-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/lib/wcs.c b/lib/wcs.c
index 8d3cb5a..fb23fa1 100644
--- a/lib/wcs.c
+++ b/lib/wcs.c
@@ -5,7 +5,7 @@ This is part of GNU Astronomy Utilities (Gnuastro) package.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2015-2018, Free Software Foundation, Inc.
+Copyright (C) 2015-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/tests/Makefile.am b/tests/Makefile.am
index 099a215..740bda3 100644
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -3,7 +3,7 @@
 ## Original author:
 ##     Mohammad Akhlaghi <mohammad@akhlaghi.org>
 ## Contributing author(s):
-## Copyright (C) 2015-2018, Free Software Foundation, Inc.
+## Copyright (C) 2015-2019, Free Software Foundation, Inc.
 ##
 ## Gnuastro is free software: you can redistribute it and/or modify it
 ## under the terms of the GNU General Public License as published by
diff --git a/tests/buildprog/simpleio.c b/tests/buildprog/simpleio.c
index 11f6597..60ed624 100644
--- a/tests/buildprog/simpleio.c
+++ b/tests/buildprog/simpleio.c
@@ -4,7 +4,7 @@ A test program to multithreaded building using Gnuastro's 
helpers.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2017-2018, Free Software Foundation, Inc.
+Copyright (C) 2017-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/tests/during-dev.sh b/tests/during-dev.sh
index c3ffb8c..676f69b 100755
--- a/tests/during-dev.sh
+++ b/tests/during-dev.sh
@@ -41,7 +41,7 @@
 # Original author:
 #     Mohammad Akhlaghi <mohammad@akhlaghi.org>
 # Contributing author(s):
-# Copyright (C) 2016-2018, Free Software Foundation, Inc.
+# Copyright (C) 2016-2019, Free Software Foundation, Inc.
 #
 # Gnuastro is free software: you can redistribute it and/or modify it under
 # the terms of the GNU General Public License as published by the Free
diff --git a/tests/lib/multithread.c b/tests/lib/multithread.c
index 42f632c..646c61d 100644
--- a/tests/lib/multithread.c
+++ b/tests/lib/multithread.c
@@ -4,7 +4,7 @@ A test program to multithreaded building using Gnuastro's 
helpers.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2017-2018, Free Software Foundation, Inc.
+Copyright (C) 2017-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/tests/lib/versioncxx.cpp b/tests/lib/versioncxx.cpp
index 0e62f3a..caca0cd 100644
--- a/tests/lib/versioncxx.cpp
+++ b/tests/lib/versioncxx.cpp
@@ -4,7 +4,7 @@ A test program to get and use the version number of Gnuastro 
within C++.
 Original author:
      Mohammad Akhlaghi <mohammad@akhlaghi.org>
 Contributing author(s):
-Copyright (C) 2015-2018, Free Software Foundation, Inc.
+Copyright (C) 2015-2019, Free Software Foundation, Inc.
 
 Gnuastro is free software: you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
diff --git a/tests/prepconf.sh b/tests/prepconf.sh
index d82d8de..1cb8640 100755
--- a/tests/prepconf.sh
+++ b/tests/prepconf.sh
@@ -6,7 +6,7 @@
 # Original author:
 #     Mohammad Akhlaghi <mohammad@akhlaghi.org>
 # Contributing author(s):
-# Copyright (C) 2016-2018, Free Software Foundation, Inc.
+# Copyright (C) 2016-2019, Free Software Foundation, Inc.
 #
 # Gnuastro is free software: you can redistribute it and/or modify it
 # under the terms of the GNU General Public License as published by the



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