[gtk] (43 commits) Non-fast-forward update to branch wip/baedert/box2

[Timm Bäder <baedert src gnome org>]

The branch 'wip/baedert/box2' 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:

  3460bb4... buttonbox: Remove redundant if statement
  7930d58... shortcutssection: Use a center box as footer
  e4d4f81... tests: Remove flicker test
  c50f588... Stop using gtk_box_pack_end
  ba9edf0... scalebutton: Stop relying on GtkBox's pack-type child prop
  e46e376... combobox: Stop using GtkBox's pack-type property
  6417ad7... Stop using GtkBox's pack-type child prop in UI files
  2d4b860... dialog: Expose the content area as a separate GtkBox child
  7459285... assistant: Fix button order in ui file
  dc37700... box: Remove pack-type child property
  048d06a... testsuite: Remove box packing css node tests
  20214cf... box: Remove children list
  0e49216... box: Simplify documentation
  d91fd55... box: Remove gtk_box_pack_end
  cc9cf75... box: Remove gtk_box_pack_start
  cdf33db... migration guide: Add a paragraph about GtkBox's pack-type
  fe1ec07... colorchooser: Remove extra custom color
  aedbb11... popover demo: Fix size-allocate callback signature
  a2c3cd1... window: Fix state_flags_changed impl name

Commits added to the branch:

  3ec2d5f... Zero-fill new GtkTextIter (*)
  6524096... gtkplacessidebar.c: move bookmark at the placeholder index (*)
  024220a... imwayland: Add text-input-unstable-v3 support (*)
  c49b29f... imwayland: clear preedit on focus out (*)
  1e69d24... modules: Check current context before retrieving surroundin (*)
  fcf28de... imwayland: Fix clearing of preedit text (*)
  c4b4e90... imwayland: Fix clearing of preedit text in webkitgtk (*)
  12ac9f3... imwayland: Don't reset serial while text-input is alive (*)
  8912dc2... imwayland: Collect return value from ::delete-surrounding s (*)
  f676278... imwayland: Handle enter and leave events (*)
  b465e04... imwayland: rearrange functions to remove prototypes (*)
  7a0b6a3... imwayland.c: fix formatting (*)
  904202a... imwayland: Plug leaks (*)
  8ce6d03... imwayland: Respect maximum length of 4000 Bytes on strings  (*)
  beb9ee6... build: wrap IM protocol building under have_wayland altoget (*)
  615f10f... revealer: Fully set the target state if unmapped during ani (*)
  bd95e16... Merge branch 'wip/carlosg/revealer-fix-interrupted-animatio (*)
  a80007a... Fix XChangeProperty calls (*)
  cd7e706... Merge branch 'wip/carlosg/imwayland-for-master' into 'maste (*)
  ed17a8d... Merge branch 'patch-1' into 'master' (*)
  3da9280... Merge branch 'wip/nbenitezl/move-bookmark-placeholder-index (*)
  7e7c909... Check for the session bus before using it (*)
  3d6bdb9... entry: Remove unused struct (*)
  0530637... stack: Don't queue an unnecessary redraw (*)
  66d3aa8... window: Fix state_flags_changed impl name (*)
  9d3120c... popover demo: Fix size-allocate callback signature (*)
  2c1198f... colorchooser: Remove extra custom color (*)
  ea3d0c0... buttonbox: Remove redundant if statement (*)
  051cbac... shortcutssection: Use a center box as footer
  f996ada... tests: Remove flicker test
  8588481... Stop using gtk_box_pack_end
  7fdd262... scalebutton: Stop relying on GtkBox's pack-type child prop
  c8211c6... combobox: Stop using GtkBox's pack-type property
  a916e81... Stop using GtkBox's pack-type child prop in UI files
  d89e355... dialog: Expose the content area as a separate GtkBox child
  048bff9... assistant: Fix button order in ui file
  8172327... box: Remove pack-type child property
  44f9e77... testsuite: Remove box packing css node tests
  e9b450c... box: Remove children list
  355bb10... box: Simplify documentation
  4d9dfce... box: Remove gtk_box_pack_end
  a8c7aa0... box: Remove gtk_box_pack_start
  49765c3... migration guide: Add a paragraph about GtkBox's pack-type

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