Changes in 3.0.0:
Emin Tufan Çetin
        Update Turkish translation
Efstathios Iosifidis
        Add Greek translation
Milo Ivir
        Update Croatian translation
Andre Klapper
        Replace git.gnome.org by Gitlab URL in <GitRepository> in DOAP file
        Replace Bugzilla by Gitlab URL in DOAP file
Марко Костић
        Add Serbian translation
Ask Hjorth Larsen
        Updated Danish translation
John Ralls
        Update library version in consideration of API changes. (HEAD -> master)
        Msgmerge updated potfile.
        Clean up documentation so that gtk-docs check passes.
        Remove PyGtk support.
        Use AM_GNU_GETTEXT_REQUIRE_VERSION instead of AM_GNU_GETTEXT_VERSION
        Remove the Carbon-based gtk-mac-menu/gtk-mac-dock/gtk-mac-bundle.
        Update AM_GNU_GETTEXT_VERSION to match gtk-osx installed gettext.
        Use __LP64__ instead of __x86_64__ to detect 64-bit builds.
DaeHyun Sung
        Update Korean translation
Fabio Tomat
        Add Friulian translation
Matej Urbančič
        Add Slovenian translation (gnome/master)
Goran Vidović
        Add Croatian translation
Balázs Úr
        Update Hungarian translation