[gtk] (18 commits) Non-fast-forward update to branch wip/baedert/transforms6

[Timm Bäder <baedert src gnome org>]

The branch 'wip/baedert/transforms6' 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:

  a4bdfd8... widget: Handle position in transformation matrix
  a468430... testsuite: Fix translate test for size_allocate changes
  be93449... compute_bounds: Add preconditions
  bd49f2b... testformentry: Pass transform in size_allocate
  9ec42aa... Add size_allocate_transformed to the docs
  b2fa7fd... testwidgettransforms: Add toggle for picking
  75065e2... widget: Only push a transform if we need to
  fd283d6... testwidgettransforms: Set transformation in size_allocate
  0446a30... gl renderer: Fix offscreen-drawn transform nodes
  586eb2f... gl renderer: Flip the framebuffer when dumping it
  38ce9df... gl renderer: Remove an incorrect comment
  6f5c5ca... Add shrinking test case
  11cf3f9... widget: Fix queue_allocate on transformed widgets
  e177962... Add flipping test
  81f0bda... css: Add transform style property
  63cfa91... csstransformvalue: Export is_none
  a36860e... widget: Apply CSS transform in size_allocate_transformed

Commits added to the branch:

  67115a1... widget: Handle position in transformation matrix
  30080d6... testsuite: Fix translate test for size_allocate changes
  035186c... compute_bounds: Add preconditions
  96437ea... testformentry: Pass transform in size_allocate
  0bc3847... Add size_allocate_transformed to the docs
  87715f2... testwidgettransforms: Add toggle for picking
  435fb64... widget: Only push a transform if we need to
  dc52c77... testwidgettransforms: Set transformation in size_allocate
  fe71fea... gl renderer: Fix offscreen-drawn transform nodes
  adbcb0c... gl renderer: Flip the framebuffer when dumping it
  693785c... gl renderer: Remove an incorrect comment
  04b72c6... Add shrinking test case
  ae0ba22... widget: Fix queue_allocate on transformed widgets
  bd3a083... Add flipping test
  2308c9d... css: Add transform style property
  5edf89b... csstransformvalue: Export is_none
  fef70b0... widget: Apply CSS transform in size_allocate_transformed
  c1f5878... widget: Avoid some type checks when picking