4.6.1 (stable):

Gdk:
* Surface::signal_render(): Fix ref count of Cairo::Region
  (Baldvin Kovacs) Merge request !66
* enum GLAPI: Partially fix name clash with epoxy/gl.h
  A complete fix requires new API; will have to wait until gtkmm 4.8
  (Kjell Ahlstedt) Issue #113 (PBS)

Gtk:
* Application::make_window_and_run(): Delay the deletion of Window
  (Kjell Ahlstedt) Issue #114 (PBS)

Build with Meson:
* Don't use deprecated execute(..., gui_app: ...)
  Require meson >= 0.56.0
  (Kjell Ahlstedt) Issue #111
* Check if Perl is required for building documentation
  (Kjell Ahlstedt)