[gtk] (24 commits) Non-fast-forward update to branch deprecate-all-the-cells

[Matthias Clasen <matthiasc src gnome org>]

The branch 'deprecate-all-the-cells' 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:

  95169ee... flowbox: Stop using gtk_render_background
  8ae8238... inspector: Drop an unused file
  3e227f5... Deprecate treeviews and cell renderers
  8288fbd... demos and examples: Ignore deprecations
  b0322c1... tools: Ignore deprecations
  9829361... testsuite: Ignore deprecations
  9398584... tests: Ignore deprecations

Commits added to the branch:

  661130d... GtkPaned: Fix symbol names in code example (*)
  9eec475... glarea: Drop an unused include (*)
  6922795... Merge branch 'main' into 'main' (*)
  15ea36e... Merge branch 'matthiasc/for-main' into 'main' (*)
  d4d0192... widget: Changing the scale does no longer require a redraw (*)
  c2c094e... Merge branch 'matthiasc/for-main' into 'main' (*)
  b895360... inspector: Fix some criticals (*)
  32ef462... fontbutton: Use attributes for custom font (*)
  6a6ef0f... Merge branch 'matthiasc/for-main' into 'main' (*)
  20b49e7... gtk-demo: Modernize accordion demo (*)
  ed83272... tests: Use per-screen CSS providers (*)
  0db5c7f... testgtk: Use global css provider (*)
  b5f7d57... Merge branch 'matthiasc/for-main' into 'main' (*)
  c8a332b... searchentry: Drop an unused include (*)
  ecbdb31... emojichooser: Drop an unused include (*)
  7c8a098... emojicompletion: Drop an unused include (*)
  3cf9149... Merge branch 'matthiasc/for-main' into 'main' (*)
  100faea... flowbox: Stop using gtk_render_background
  b3057af... inspector: Drop an unused file
  1d87d03... Deprecate treeviews and cell renderers
  5bb6490... demos and examples: Ignore deprecations
  8f1ae08... tools: Ignore deprecations
  d4d9fea... testsuite: Ignore deprecations
  13ddadc... tests: Ignore deprecations

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