version 3.13.1
 - Updated POTFILES.in
 - Use a traditional title bar when requested
   Not all environments desire header bars. We use the
   'gtk-shell-shows-menubar' setting to decide whether to use the header
   bar.
   https://bugzilla.gnome.org/show_bug.cgi?id=728866
 - Use avatar chooser headerbar only when requested
   Use headerbar in the avatar chooser dialog only when necessary according
   to the "gtk-shell-shows-menubar" setting.
   https://bugzilla.gnome.org/show_bug.cgi?id=728866
 - Rename desktop file and set DBusActivatable=true
   Rename AppData and GResource XML in line with desktop file changes.
 - Add D-Bus service file
   Allow the application to be D-Bus activated by running with the
   --gapplication-service argument.
 - Remove old maintainers from DOAP file
 - Stop the running action when an error occurs
   https://bugzilla.gnome.org/show_bug.cgi?id=707386
 - Inhibit user switching and session idle
   As recording video from a webcam is undesirable when combined with
   switching users, inhibit switching and session idling.
   https://bugzilla.gnome.org/show_bug.cgi?id=694214
 - Depend on Automake 1.12 for test-driver support
   https://bugzilla.gnome.org/show_bug.cgi?id=710420