master updated (9d8fc3a -> 1efaa1d)

[Simen Heggestøyl]

simenheg pushed a change to branch master.

      from  9d8fc3a   Use lexical-binding in help-mode.el and add tests
       new  b7682d2   Add writing modes module to CSS property list
       new  2df2f78   Add containment module to CSS property list
       new  1efaa1d   Allow underscores in CSS variable names


Summary of changes:
 lisp/textmodes/css-mode.el            | 18 +++++++++++++++---
 test/manual/indent/css-mode.css       |  4 ++++
 test/manual/indent/less-css-mode.less | 10 ++++++++++
 test/manual/indent/scss-mode.scss     |  4 ++++
 4 files changed, 33 insertions(+), 3 deletions(-)