Mohammed Sadiq authored Sep 06, 2016 and Matthias Clasen committed Sep 10, 2016

G_DECLARE_FINAL_TYPE was introduced in glib 2.44.
We shall use that now so that lots of boilerplate code can
be reduced.

https://bugzilla.gnome.org/show_bug.cgi?id=770278

Instead of hardcoding an accelerator in the ui file, use
gtk_application_set_accels_for_action.

Add a new example to the getting started part of the docs. The focus
of this example is on 'new stuff': GtkApplication, templates, settings,
gmenu, gaction, GtkStack, GtkHeaderBar, GtkSearchBar, GtkRevealer,
GtkListBox, GtkMenuButton, etc.

It is being developed in several steps. Each step is put in a separate
directory below examples/: application1, ..., application8. This is a
little repetitive, but lets us use the code of all examples in the
documentation.