3.5.6 (unstable):

Gtk:
* AppChooserDialog: Fix property name in constructors.
  (Kjell Ahlstedt)
* Application:
  - run(): Do not show the window until activation, fix a crash.
  - Added get_window_by_id().
* Button: Addedset/get_always_show_image() and the property.
* Added Gtk::MenuButton.
* Added Gtk::SearchEntry.
* WidgetPath: Added to_string(), iter_get_siblings() and 
  iter_list_regions().
  (Murray Cumming)
* Fix wrap_init() for Quartz (MacOS).
  (Kjell Ahlstedt) Bug #678883.

Gdk:
* Pixbuf: Added  const version of save() and friends
  (Mark Vender) Bug #678886.
* Screen: Added get_monitor_workarea().