4.13.1 (unstable):

Gdk:
* Add DmabufFormats, DmabufTexture, DmabufTextureBuilder
* Display: Add get/property_dmabuf_formats().
  (Kjell Ahlstedt)

Gtk:
* ColumnView, GridView, ListView, Viewport: Add default values
  on some method parameters.
  (Daniel Boles) Issue #141, merge request !76
* SignalListItemFactory: Add signals taking Glib::Object.
  (Daniel Boles) Merge request !78
* TreePath: Add ctor and assignment taking const_iterator.
  (Daniel Boles) Issue #145, merge request !79
* Widget: Add get_children().
  (Daniel Boles) Issue #143, merge request !80
* ShortcutsGroup: Add add_shortcut()
  ShortcutsSection: Add add_group()
  ShortcutsWindow: Add add_section()
  PopoverMenu: Add set/get/property_flags().
  (Daniel Boles) Merge request !81
* Window: Deprecate present(guint32 timestamp)
* Add PrintDialog and PrintSetup
  (Kjell Ahlstedt)

Tests:
* Add get_children test
  (Daniel Boles) Issue #143, merge request !80

Build:
* Require gtk4 >= 4.13.2
  (Kjell Ahlstedt)