[gtk] (11 commits) Non-fast-forward update to branch wip/baedert/for-master

[Timm Bäder <baedert src gnome org>]

The branch 'wip/baedert/for-master' 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:

  b51f313... Start using GtkWidget's new style class API
  b41ae51... snapshot: Add _push_collect() and _pop_collect()
  8b90b3d... widget: Use gtk_snapshot_{push,pop})_collect
  f4e5141... widget: Fix a from_string/try_string mixup
  22a2954... GskRoundedRect: Inline graphene_rect_contains_rect
  5bdd171... textlayout: Use gtk_snapshot_{push,pop}_collect()
  2658882... snapshot: Remove new_with_parent
  ffe8bfd... GskTransform: add assertions to make normalize_angle() inte
  29854b4... GskTransform: Remove useless fmod check

Commits added to the branch:

  2a0adee... Start using GtkWidget's new style class API
  f1daa49... snapshot: Add _push_collect() and _pop_collect()
  a34738f... widget: Use gtk_snapshot_{push,pop})_collect
  f717daa... widget: Fix a from_string/try_string mixup
  5f8919a... GskRoundedRect: Inline graphene_rect_contains_rect
  ae73472... textlayout: Use gtk_snapshot_{push,pop}_collect()
  1123466... snapshot: Remove new_with_parent
  8ad4ee1... GskTransform: add assertions to make normalize_angle() inte
  3acb25d... GskTransform: Remove useless fmod check
  272102e... style context: Remove parent relationship
  a220112... widget: Create style context in _init