[gnome-mahjongg] (24 commits) Non-fast-forward update to branch arnaudb/wip/gtk4

[Arnaud B. <arnaudb src gnome org>]

The branch 'arnaudb/wip/gtk4' 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:

  dd72dce... Compile with Gtk4.
  2aaf787... Use GestureClick.
  e5a6d4e... Make on_window_state_event work.
  459d409... No need to add events.
  5c6614c... Looks like queue_draw_area is gone.
  9ee7e5b... Adapt to DrawingArea API.
  484a224... Adapt to Box API.
  77fdcb5... Widgets are visible.
  4203688... Adapt to HeaderBar API.
  13fc224... Adapt to MenuButton API.
  f8c1436... Adapt to Button API.
  c0ef3fd... Adapt to size_allocate.
  518c8a4... Adapt border_width.
  219352b... Adapt set_alignment.
  3a518e1... Expand view.
  71f9276... Use Gtk namespace.
  902ec45... Use <Control>.
  b31d497... Adapt to ScrolledWindow API.
  3577370... Update a method.
  84afeb0... Adapt to Dialog API.
  7004e5a... Adapt to HeaderBar API.
  ae0a08e... Adapt more size-allocate stuff.
  d6d86bd... Make things work.

Commits added to the branch:

  a13d42d... Freeze menu. (*)
  d184293... Compile with Gtk4.
  9e4fec1... Use GestureClick.
  d0ca0c8... Make on_window_state_event work.
  0944576... No need to add events.
  ef3a6eb... Looks like queue_draw_area is gone.
  f07e906... Adapt to DrawingArea API.
  ad7738d... Adapt to Box API.
  3094ec4... Widgets are visible.
  c904ae4... Adapt to HeaderBar API.
  f298114... Adapt to MenuButton API.
  cfed7a0... Adapt to Button API.
  92dac1d... Adapt to size_allocate.
  ac665db... Adapt border_width.
  f9a3a88... Adapt set_alignment.
  fb84f67... Expand view.
  2040f22... Use Gtk namespace.
  65b54ce... Use <Control>.
  b940f14... Adapt to ScrolledWindow API.
  c11db42... Update a method.
  0b31168... Adapt to Dialog API.
  4d242f2... Adapt to HeaderBar API.
  b64e7bd... Adapt more size-allocate stuff.
  fc87c7d... Make things work.

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