[gnome-sudoku] (27 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:

  13259ef... Compile with Gtk4.
  a721760... Use GestureClick.
  b0754f3... Make on_window_state_event work.
  918212a... Use EventControllerFocus.
  aa79f2d... The margin property is gone.
  e863fb7... Widgets are visible.
  811d815... Correct RGBA type.
  623c3b2... Adapt to Popover API.
  c23c008... No need to set events.
  4e2898c... Add pangocairo dependency.
  74a5926... Adapt to Box API.
  476dbd4... Adapt size_allocate() method.
  90f999b... Adapt to DrawingArea API.
  adbee5d... AspectFrame is not subclassable anymore.
  4c7ac1e... TODO try a fix.
  861f5d6... Fix PrintDialog.
  2265c67... Adapt UI files.
  24b0762... Fix board size.
  122123f... Add a FIXME.
  0c5ae07... Adapt to AspectFrame API.
  af624c4... Make popovers work.
  2b5c13d... Make keyboard start to work.
  e41c0c8... Make things work.
  b37ddbb... Update a method.
  ef9ccd4... Adapt to GtkStack API.
  4b263b6... Adapt to HeaderBar API.

Commits added to the branch:

  2389faa... Do not use load_from_data(). (*)
  e6be1e0... Compile with Gtk4.
  fb4d43a... Use GestureClick.
  194a1a1... Make on_window_state_event work.
  aa50e1b... Use EventControllerFocus.
  e92b896... The margin property is gone.
  65c1945... Widgets are visible.
  5f8c959... Correct RGBA type.
  f204a0a... Adapt to Popover API.
  5363d8d... No need to set events.
  66025b1... Add pangocairo dependency.
  a6c18d2... Adapt to Box API.
  a0fab5c... Adapt size_allocate() method.
  c921e34... Adapt to DrawingArea API.
  04f4e03... AspectFrame is not subclassable anymore.
  c1da7d4... TODO try a fix.
  1127311... Fix PrintDialog.
  04c4eab... Adapt UI files.
  63080b2... Fix board size.
  af83817... Add a FIXME.
  a7d4ad0... Adapt to AspectFrame API.
  a083b0c... Make popovers work.
  f652da2... Make keyboard start to work.
  bec3012... Make things work.
  5379677... Update a method.
  79a3579... Adapt to GtkStack API.
  e7febb1... Adapt to HeaderBar API.

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