[gtk] (30 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:

  208a878... colorplane: Whitespace
  d70d662... colorutils: Remove unused macro
  2dbc84a... colorplane: Refactor create_texture()
  319fa09... colorutils: Refactor hsv_to_rgb and fold into only caller
  1093525... colorplane: Remove (un)realize handlers
  4b46818... colorscale: Refactor creating the hue texture
  f25eb8f... gdkgl: Remove unused cairo_get_matrix() call
  96977a3... glarea demo: Add min size to gl area
  ad2c429... gl renderer: Use premultiply() in inset shadow shader`
  72eae9e... unblurred outset shadow shader: Use premultiply()
  289cee2... gdkgl: Rename function
  d8bdf07... gl renderer: Ignore rendering if accumulated opacity is too
  c1ea06c... gl renderer: Add a helper to setup projection matrix
  c3490b9... shaderbuilder: Print error message after source code
  20e7310... gl renderer: simplify ->render() implementation a bit
  b8ba53e... gdkgl: Stop getting the clip region from cairo
  721b176... gdkgl: Remove flipping when downloading GL texture
  896eaa4... gtkbuilder: Remove pointless function prototype
  0244932... glsl: Add a comment
  165a645... gl renderer: Flip texture in render_texture()

Commits added to the branch:

  43300b4... Tone down a user visible message (*)
  c835df5... docs: Add more details to the migration guide (*)
  e7aa103... gtk-demo: Ellipsize columns in the characters demo (*)
  eb64729... build: Require sysprof 3.38.0 (*)
  6a0704a... window: Be more careful when looking for focus (*)
  115ed00... Send focus events to the root (*)
  4c3eb7c... Merge branch 'ebassi/for-master' into 'master' (*)
  8fcd4ac... gtk-demo: Keep undisplayable resources out of view (*)
  758675f... Merge branch 'matthiasc/for-master' into 'master' (*)
  e2f287b... colorplane: Whitespace
  43f8a24... colorutils: Remove unused macro
  d2c414c... colorplane: Refactor create_texture()
  e342e66... colorutils: Refactor hsv_to_rgb and fold into only caller
  7f1cf6a... colorplane: Remove (un)realize handlers
  83a27d8... colorscale: Refactor creating the hue texture
  9c95822... gdkgl: Remove unused cairo_get_matrix() call
  4fde409... glarea demo: Add min size to gl area
  0366fc9... gl renderer: Use premultiply() in inset shadow shader`
  ab02421... unblurred outset shadow shader: Use premultiply()
  bdd8a32... gdkgl: Rename function
  6c97cb2... gl renderer: Ignore rendering if accumulated opacity is too
  217c184... gl renderer: Add a helper to setup projection matrix
  fdba31a... shaderbuilder: Print error message after source code
  9ca95f5... gl renderer: simplify ->render() implementation a bit
  a73c1bd... gdkgl: Stop getting the clip region from cairo
  19640a2... gdkgl: Remove flipping when downloading GL texture
  0dd4768... gtkbuilder: Remove pointless function prototype
  9b04d58... glsl: Add a comment
  c462a22... gl renderer: Flip texture in render_texture()
  cca6be5... gl renderer: Avoid some code duplication

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