[adwaita-icon-theme] Created tag 3.31.1

[Jakub Steiner <jimmac src gnome org>]

The unsigned tag '3.31.1' was created.

Tagger: Jakub Steiner <jimmac gmail com>
Date: 1541174754 +0100

    3.31.1

Changes since the last tag '3.30.0':

Jakub Steiner (13):
      remove Terminal and System monitor
      symbolic: fix folder-symbolic
      retire fullcolor action icons
      retire fullcolor category icons
      fullcolor: move category to legacy
      fullcolor: category to legacy
      apps to legacy
      app to legacy
      apps to legacy
      fullcolor: apps to legacy
      symbolic: list types
      symbolic: cleanup
      prepare for a very late 3.31.1