[libwnck] Created tag 3.31.1

[Marco Trevisan <marcotrevi src gnome org>]

The signed tag '3.31.1' was created.

Tagger: Marco Trevisan (Treviño) <mail 3v1n0 net>
Date: 1541563397 -0500

    Release 3.31.1

Changes since the last tag '3.30.0':

Marco Trevisan (Treviño) (9):
      Release: post-release bump to 3.31.1
      meson: add support for building with the cool stuff
      meson, doc: use sgml mode parameter
      meson: use lib dependency instead of replicating them around
      meson: use gnome.mkenums_simple for generated types
      gitlab-ci: also build with meson
      meson: remove unneeded definitions in meson builds
      meson: use dict for dependency list
      Release: 3.31.1