[gnome-sudoku] Created tag 3.20.0

[Sahil Sareen <ssareen src gnome org>]

The unsigned tag '3.20.0' was created.

Tagger: Sahil Sareen <sahil sareen hotmail com>
Date: Mon Mar 21 00:16:23 2016 +0530

    GNOME Sudoku 3.20.0

Changes since the last tag '3.19.4':

Alexander Shopov (1):
      Added Bulgarian translation

Cédric Valmary (1):
      Updated Occitan translation

Daniel Korostil (1):
      Updated Ukrainian translation

Matej Urbančič (1):
      Updated Slovenian translation

Richard Hughes (1):
      Add a missing tag to the AppData file

Rūdolfs Mazurs (1):
      Update Latvian translation

Sahil Sareen (7):
      Update license
      Use AM_DISTCHECK_CONFIGURE_FLAGS
      Bump up the license version on source files
      Update CSS for GTK+ 3.19
      Require GTK+ 3.19
      Update about dialog
      Prepare 3.20.0

Stas Solovey (1):
      Updated Russian translation