2.91.5 (unstable): Gdk: * Device: get_n_axes() now returns an int instead of a guint. Gtk: * ComboBox: Added get/set_id_column(), get/set_active_id() and properties. * Scrollable, ScrolledWindow: Fix Adjustment reference counting. * Added Switch widget. * Removed Ruler, with no replacement in gtkmm itself, because it was not used generally enough. (Murray Cumming)