2.51.2 (unstable): Distro packagers should probably not package this yet. Glib: * Object construction: Add custom class init and instance init functions An extra class init function is useful in Gtk::WidgetCustomDraw and Gtk::WidgetCustomSnapshot. (Kjell Ahlstedt) Bug #775348 Gio: * Action: #include , for convenience. (Daniel Boles) Bug #777953 * SimpleAction: Make set_state() public. (Daniel Boles) Bug #777953 Documentation: * Glib::Variant: Explain how to create "maybe" type. (Daniel Boles) Bug #778219