[yelp-xsl] Created tag 3.31.90

[Shaun McCance <shaunm src gnome org>]

The signed tag '3.31.90' was created.

Tagger: Shaun McCance <shaunm redhat com>
Date: 1549299550 -0500

    Version 3.31.90

Changes since the last tag '3.30.0':

Andre Klapper (1):
      Replace Bugzilla by Gitlab URL in DOAP file

Anish Sheela (1):
      Update Malayalam translation

Shaun McCance (14):
      Change xsldoc to use ducktype
      xsldoc.xsl: Rename from xsldoc-scan.xsl
      doc/yelp-xsl/Makefile.am: Remove reference to docbook/omf stylesheets
      Merge branch 'wip/xslduck'
      xsldoc.xsl: Cleaning up some FIXMEs
      Added ui-expander-preview style for elements with ui:expanded
      Initial work on Mallard stacks
      Allow non-experimental hi element, now with style hints
      mal2html-inline: Special-case e:hi inside mal:hi
      mal2html-inline: Use HTML ins/del for hi elements with those styles
      color.xsl: Refresh colors for new GNOME HIG colors
      doc: Autogenerated doc changes
      doc: Updates to Makefile.am to make distcheck work
      Version 3.31.90

Stas Solovey (1):
      Update Russian translation

Yuras Shumovich (1):
      Update Belarusian translation

Марко Костић (1):
      Update Serbian translation