4.9.2 (unstable):

Gdk:
* Display: Deprecate notify_startup_complete() and put_event().
  (Kjell Ahlstedt)

Gtk:
* Widget: Deprecate show() and hide(). (Use set_visible().)
* Add FileLauncher.
* CenterBox: Add property_[start|center|end]_widget().
* FileDialog: Rename get/set/property_current_filter() to
    get/set/property_default_filter(). Rename get/set/property_current_folder() to
    get/set/property_initial_folder(). Add get/set/property_initial_name(),
    get/set/property_initial_file(), get/set/property_accept_label().
    Remove current_file parameter from open(), current_folder parameter from
    select_folder(). Delete get/set/property_shortcut_folders().
* GestureStylus: Add get/set/property_stylus_only().
* TreeExpander: Add get/set/property_indent_for_depth()
   and get/set/property_hide_expander().
* ToggleButton: Deprecate toggled().
  (Kjell Ahlstedt)

Build:
* Require gtk4 >= 4.9.2
  (Kjell Ahlstedt)
* Meson build: Fix the evaluation of is_git_build on Windows
  (Kjell Ahlstedt) Issue #131 (William Roy)