NEWS: expected features of Bison 3.3

[Akim Demaille]

This is what I have in mind.  Thoughts?

commit 7823c65ee9d0c52edab30ef1f6d944ae393cb31d
Author: Akim Demaille <address@hidden>
Date:   Sun Nov 11 08:36:11 2018 +0100

    NEWS: expected features of Bison 3.3

diff --git a/NEWS b/NEWS
index daa5da6b..a9549a63 100644
--- a/NEWS
+++ b/NEWS
@@ -2,6 +2,15 @@ GNU Bison NEWS
 
 * Noteworthy changes in release ?.? (????-??-??) [?]
 
+** Expected features for Bison 3.3
+
+  - per-rule %expect/%expect-rr
+  - improve syntax errors (UTF-8, internationalization)
+  - move bitsets to gnulib
+  - relative paths (allowing to relocate an installation of bison)
+  - use gettext-h in gnulib instead of gettext
+  - constexpr/noexcept in C++
+
 ** Backward incompatible changes
 
   Support for DJGPP, which has been unmaintained and untested for years, is