[gtkmm] Created tag 4.4.0

[Kjell Ahlstedt <kjellahl src gnome org>]

The unsigned tag '4.4.0' was created.

Tagger: Kjell Ahlstedt <kjellahlstedt gmail com>
Date: 1631205609 +0200

    4.4.0

Changes since the last tag '4.2.0':

BogDan Vatra (1):
      Add wrapper for EventControllerLegacy

Kjell Ahlstedt (20):
      Regenerate [gdk|gtk]_docs.xml
      Gtk::StackSwitcher: Add TODO comments about Orientable
      Gtk::DropTarget, MediaStream: Ignore deprecations
      Merge branch 'add_eventcontrollerlegacy_wrapper' into 'master'
      Minor fixes after Gtk::EventControllerLegacy was added
      Gtk::MediaStream: Ignore more deprecations
      ListStore and TreeStore demos: Avoid runtime warnings
      SizeGroup demo: Derive from Gtk::Window instead of Dialog
      Add ColumnView demo
      Gdk::PixbufAnimation: Add some create_from_*() methods
      Images demo: Reanimate floppy buddy
      Gtk: Several get_item() methods: Don't try to cast to Glib::Object
      Deprecate Gdk::GLContext::get_shared_context()
      Gtk::Assistant, etc.: Fix bugs noticed by clang++
      Gtk::Application, Window: Swap inclusions
      CI: Add .gitlab-ci.yml
      docs/reference/Doxyfile.in: Remove obsolete entry
      Gdk, Gtk: Regenerate docs.xml and .defs files
      Gdk, Gtk: Add API for version 4.4
      4.4.0