[gtk] (13 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:

  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
  e37fccc... GskTransform: add assertions to make normalize_angle() inte
  7d59195... GskTransform: Remove useless fmod check
  4864264... style context: Remove parent relationship
  1741db6... widget: Create style context in _init

Commits added to the branch:

  9735db0... Start using GtkWidget's new style class API
  3292507... snapshot: Add _push_collect() and _pop_collect()
  26debb7... widget: Use gtk_snapshot_{push,pop})_collect
  e5b8070... widget: Fix a from_string/try_string mixup
  c17406b... GskRoundedRect: Inline graphene_rect_contains_rect
  05f5ace... textlayout: Use gtk_snapshot_{push,pop}_collect()
  bbe0a06... snapshot: Remove new_with_parent
  6dd8b08... GskTransform: add assertions to make normalize_angle() inte
  d731106... GskTransform: Remove useless fmod check
  a09060d... style context: Remove parent relationship
  3928832... widget: Create style context in _init
  d05a01f... {box,grid}layout: Access border spacing directly
  7d7a7d9... calendar: Fix an uninitialized value