4.13.3 (unstable):

Gdk, Gtk:
* Make enum bitwise operators constexpr
  (Kjell Ahlstedt) Issue #153 (PBS)

Gtk:
* FileLauncher: Add get/set/property_writable()
* Settings: Add property_gtk_show_status_shapes()
* SpinButton: Add get/set/property_activates_default()
  (Kjell Ahlstedt)

Documentation:
* Gtk::ScrolledWindow: Update the class description
  (Kjell Ahlstedt)

Build:
* Require gtk4 >= 4.13.6
  (Kjell Ahlstedt)