[libgd] (16 commits) Non-fast-forward update to branch wip/ernestask/gtk4

[Ernestas Kulik <ernestask src gnome org>]

The branch 'wip/ernestask/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:

  34bb476... toggle-pixbuf-renderer: use gtk_render_activity()
  e15f39d... main-icon-view: remove style property
  11044ce... toggle-pixbuf-renderer: use snapshot API for rendering
  9a68d3b... main-list-view: use snapshot API for rendering
  fb886dc... main-list-view: set up a clip region
  cbf5597... main-view: connect to generic event vfunc
  8079908... notification: use gtk_button_new_from_icon_name()
  7bfbc0d... Add test for GdNotification
  4541638... notification: use g_timeout_add()
  a74b327... notification: remove include_internals from forall()
  ec8bc73... notification: remove draw vfunc override
  c3c918d... notification: use gtk_widget_measure()
  da03ee6... notification: use an event controller for motion events
  cb739eb... notification: remove visibility_notify_event override
  2c7f495... notification: use gtk_widget_get_allocated_height()
  bb54cbe... notification: default to being invisible
  55f640f... toggle-pixbuf-renderer: copy gtk_paint_spinner() from GTK+

Commits added to the branch:

  1901bb2... toggle-pixbuf-renderer: copy gtk_paint_spinner() from GTK+
  004be7e... main-icon-view: remove style property
  a8f7a2d... toggle-pixbuf-renderer: use snapshot API for rendering
  5939cd6... main-list-view: use snapshot API for rendering
  40c3870... main-list-view: set up a clip region
  9103c38... main-view: connect to generic event vfunc
  6896685... notification: use gtk_button_new_from_icon_name()
  c103077... Add test for GdNotification
  9e43884... notification: use g_timeout_add()
  81d0080... notification: remove include_internals from forall()
  fd42a42... notification: remove draw vfunc override
  2d37731... notification: use gtk_widget_measure()
  8373d3d... notification: use an event controller for motion events
  40be2e7... notification: remove visibility_notify_event override
  9439e26... notification: use gtk_widget_get_allocated_height()
  f8b8ec2... notification: default to being invisible