[gtk+] (30 commits) Non-fast-forward update to branch wip/watson/progress-tracker

[Matthew Watson <watson src gnome org>]

The branch 'wip/watson/progress-tracker' 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:

  cd254cc... progresstracker: simple struct to track animation progress
  abd22e5... stack: port to progress tracker
  f37a59f... stack: skip first frame for animations
  1aa1316... revealer: port to progress tracker
  fbd9c54... switch: port to progress tracker
  2446e0b... popover: port to progress tracker
  83c4012... scrolledwindow: port indicator fade to progress tracker
  4128744... progressbar: remove weird code
  5779779... progressbar: port to progress tracker
  3c53ece... csstransition: port to progress tracker
  db745a3... cssanimation: port to progress tracker
  8e5d3f6... animatedstyle: fail to create new style if timestamp goes b
  dcf2100... animatedstyle: just ref current style if timestamp the same
  f74099a... animatedstyle: rename apply_animations -> advance_animation
  867a9bf... animatedstyle: don't share styleanimations
  f8279d5... styleanimation: don't take timestamp for static/finished
  3fa0b8a... styleanimation: rename set_values -> advance_values
  7f79159... progresstracker: add GTK_SLOWDONW environment variable
  c5738c4... inspector: add slider to control slowdown factor

Commits added to the branch:

  a91237d... window: Remove suspicious branch (*)
  6f2d5a6... Move autotestkeywords to testsuite (*)
  785a425... Add tests for seat apis (*)
  669336c... Expand visual tests a bit (*)
  43a5683... Add some tests for GdkRectangle (*)
  e7cd3dd... Adwaita: cosmetic fix (*)
  38f9419... Adwaita: set caret-color for drop targets (*)
  cea8c29... GDK W32: Implement show_window_menu() (*)
  77eebbd... GDK W32: Erase hidden layered windows before showing them (*)
  6267b6b... Bump to 3.21.0 (*)
  27a1b50... window: Fix gtk_window_set_geometry_hints documentation (*)
  cc8a760... progresstracker: simple struct to track animation progress
  173a8a3... stack: port to progress tracker
  8285e93... stack: skip first frame for animations
  05fa6a9... revealer: port to progress tracker
  73da98c... switch: port to progress tracker
  a356bef... popover: port to progress tracker
  1ced3ce... scrolledwindow: port indicator fade to progress tracker
  f56bfb6... progressbar: remove weird code
  e4e8a2d... progressbar: port to progress tracker
  885b2a8... csstransition: port to progress tracker
  93177a7... cssanimation: port to progress tracker
  9bcf856... animatedstyle: fail to create new style if timestamp goes b
  7af3893... animatedstyle: just ref current style if timestamp the same
  2a5e117... animatedstyle: rename apply_animations -> advance_animation
  ccdf409... animatedstyle: don't share styleanimations
  12556b6... styleanimation: don't take timestamp for static/finished
  ee23dc4... styleanimation: rename set_values -> advance_values
  7a31f21... progresstracker: add GTK_SLOWDONW environment variable
  b0ac8c7... inspector: add slider to control slowdown factor

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