.0 stable versions of glibmm and gtkmm

[Murray Cumming <murrayc murrayc com>]

glib and GTK+ have released API/ABI-stable versions again, so we should
soon. Does anyone know of any problems with recently-added API?

Here's a list of new API in glibmm, though it's probably not complete:
https://developer.gnome.org/glibmm/unstable/since_2_40.html

And here's the new list of new AI for gtkmm:
https://developer.gnome.org/gtkmm/unstable/since_3_12.html

We should make sure that new classes, such as Gtk::ActionBar.
Gtk::FlowBox and Gtk::Popver have at least some example code that shows
that they basically work.

-- 
murrayc murrayc com
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