[devhelp] Created tag 3.21.90

[Frederic Peters <fpeters src gnome org>]

The unsigned tag '3.21.90' was created.

Tagger: Frédéric Péters <fpeters 0d be>
Date: Mon Aug 15 11:45:48 2016 +0200

    release: 3.21.90

Changes since the last tag '3.20.0':

Andika Triwidada (1):
      Updated Indonesian translation

Cédric Valmary (2):
      Updated Occitan translation
      Updated Occitan translation

Ernestas Kulik (1):
      window: implement scroll zoom

Frédéric Péters (2):
      post release version bump
      release: 3.21.90

GNOME Translation Robot (1):
      Updated Portuguese translation

Inaki Larranaga Murgoitio (1):
      Updated Basque language

Kjartan Maraas (1):
      Updated Norwegian bokmål translation.

Milo Casagrande (1):
      Updated Italian translation

Piotr Drąg (1):
      Add Language headers to po files

Sébastien Wilmet (3):
      window: trivial code simplification
      app: update copyright in about dialog
      app: add more developers to the credits in the about dialog

Theppitak Karoonboonyanan (1):
      Updated Thai translation