[gnome-shell] (9 commits) Non-fast-forward update to branch wip/fmuellner/window-preview-translucency

[Florian Müllner <fmuellner src gnome org>]

The branch 'wip/fmuellner/window-preview-translucency' was changed in a way that was not a fast-forward 
update.
NOTE: This may cause problems for people pulling from the branch. For more information,
please see:

 https://wiki.gnome.org/Git/Help/NonFastForward

Commits removed from the branch:

  07d60a8... workspace: Set offscreen redirect on window previews

Commits added to the branch:

  8c3811a... inputMethod: Avoid calling set_preedit_text() if unnecessar (*)
  6f5a099... inputMethod: Keep track of preedit string visibility (*)
  a4d09b4... workspace: Remove dead code (*)
  6099e92... workspace: Confine caption width to workspace area (*)
  50c2871... Bump version to 3.31.2 (*)
  2849787... windowAttentionHandler: Handle XUrgencyHint as well (*)
  240f3fa... windowAttentionHandler: Fix syntax errors (*)
  61160d2... workspace: Let WindowClone inherit from StWidget
  b7c9f13... workspace: Set offscreen redirect on window previews

(*) This commit already existed in another branch; no separate mail sent