[gnome-shell] (30 commits) Non-fast-forward update to branch wip/fmuellner/fix-clear-events

[Georges Basile Stavracas Neto <gbsneto src gnome org>]

The branch 'wip/fmuellner/fix-clear-events' 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:

  a1dc4fc... events: Re-use event messages where possible

Commits added to the branch:

  f9dec47... Update Chinese (Taiwan) translation (*)
  8237a1f... Change "const" to "var" (*)
  a24999b... st-texture-cache: Don't add NULL textures to cache (*)
  1f03599... st-texture-cache: Save cairo surfaces to a different map (*)
  5fe349d... thunderbolt: Do not auto start boltd (*)
  c9bf72c... windowMenu: Check if monitorIndex is valid before using it (*)
  19e864e... keyboard: Handle case where keyboardMonitor is unset (*)
  84d2d3f... keyboard: Check monitor validity before deferencing it (*)
  8789469... windowManager: Don't animate unmanaged windows on (un)minim (*)
  996dd74... layoutManager: Return null monitor if focusIndex is invalid (*)
  2ba2640... st-icon: Remove unused size values (*)
  e522e2e... st-icon: Create shadow pipeline only at paint (*)
  e39d715... st-private: Warn if creating shadow for unallocated actors (*)
  ac58c42... Update Occitan translation (*)
  2c0376c... workspaceThumbnail: Initialize signal handler ids to 0 (*)
  47ea10b... Remove usage of MetaScreen (*)
  a301820... Update Catalan translation (*)
  f7355f5... closeDialog: use {disable,enable}_unredirect_for_display (*)
  266b0e9... keyboard: remove global.screen (*)
  ccadf6a... workspaceThumbnail: remove unused private win reference (*)
  d0bdea3... workspace: Don't keep stale clones in list (*)
  d9a1434... workspaceThumbnail: Don't keep stale clones in list (*)
  d5e8f17... Bump version to 3.29.3 (*)
  fc5ab44... keyboard: Implement standalone FocusTracker (*)
  e3ebc8d... keyboard: Remove stale references to global.screen (*)
  4bf033a... st: Make StScrollables' paint volume reflect the unconstrai (*)
  86a520b... st: Clip StEntry to allocation (*)
  ab4c72d... st-box-layout: Queue relayout on adjustment changes (*)
  b1b455f... st-adjustment: Mark all properties as EXPLICIT_NOTIFY (*)
  e7f2e92... events: Re-use event messages where possible

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