[gtk+] (16 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:

  415bfc6... progresstracker: simple struct to track animation progress
  541f5f2... progresstracker: add GTK_SLOWDOWN environment variable
  8ae6d61... inspector: add slider to control slowdown factor
  44d9631... stack: port to progress tracker
  cdf3d25... stack: skip first frame for animations
  7231fa3... revealer: port to progress tracker
  12d34a6... switch: port to progress tracker
  473fb72... popover: port to progress tracker
  d6b3b34... scrolledwindow: port indicator fade to progress tracker
  b6abd01... progressbar: port to progress tracker
  6a29b2a... entry: port to progress tracker
  440ad7e... csstransition: port to progress tracker
  9a126d3... cssanimation: port to progress tracker
  f3c83dc... animatedstyle: fail to create new style if timestamp goes b
  2e9f8d4... animatedstyle: just ref current style if timestamp the same
  b384a52... animatedstyle: don't share styleanimations

Commits added to the branch:

  44a9c0e... progresstracker: simple struct to track animation progress
  ed75fa6... progresstracker: add GTK_SLOWDOWN environment variable
  e962eba... inspector: add slider to control slowdown factor
  d3961da... stack: port to progress tracker
  abc8b34... stack: skip first frame for animations
  5d5ee76... revealer: port to progress tracker
  c2b97c1... switch: port to progress tracker
  3fed034... popover: port to progress tracker
  a095861... scrolledwindow: port indicator fade to progress tracker
  4bf81e6... progressbar: port to progress tracker
  f5a8201... entry: port to progress tracker
  865201f... csstransition: port to progress tracker
  b1c9437... cssanimation: port to progress tracker
  e56a1dd... animatedstyle: fail to create new style if timestamp goes b
  945f4a4... animatedstyle: just ref current style if timestamp the same
  c9f4c86... animatedstyle: don't share styleanimations