2.31.22 (unstable):

Glib:
* Threads, Dispatcher: Delete DispatchNotifier.
  (Kjell Ahlstedt) Bug #671587.

Gio:
* Action: Ensure vfunc callbacks return valid memory.
  (José Alburquerque)
* ActionGroup: list_actions_vfunc(): Do not return freed memory.
  (Murray Cumming)
* Move AppLaunchContext into its own header file.
  (Murray Cumming)
* Add Menu and MenuItem.
* SimpleAction: Constructor: Add a parameter that takes no VariantType.
  (Murray Cumming)

Gio::DBus:
* Object: Ensure vfunc callbacks return valid memory.
  (José Alburquerque)
* Add the Interface and Object interfaces.
  (José Alburquerque)

gmmproc:
* _WRAP_SIGNAL() can now take an optional deprecated parameter,
  like _WRAP_METHOD() and _WRAP_PROPERTY().
  (Murray Cumming, Kjell Ahlstedt)
* _WRAP_PROPERTY(): Correct the ifdefs in generated code when
  using the optional deprecated parameter.
  (Kjell Ahlstedt)

Other:
* Dispatcher examples: Use Glib::signal_idle().connect_once().
  (Kjell Ahlstedt) Bug #396963
* Some fixes for minor clang++ warnings.
  (José Alburquerque, Murray Cumming)