2.20.1:

Gtk:
* RecentAction: Fix the constructor that takes a RecentManager.
  Bug #612900 (Morten Skaaning)
* TreeRowReference::get_model(): Correct the reference counting.
  Bug #611814 (Kamil Renczewski)
  (Murray Cumming)

Documentation:
* Builder: Complete the exceptions thrown documentation.
  Bug #548022 (Alexander Shaduri)
* Remove gobject-introspection annoations.
* Correct some newin/since doyxgen tags.
  (Murray Cumming)

Build:
* Updates for the Windows installer.
  (Armin Burgmeier)