[iagno] Created tag 3.13.91

[Michael Catanzaro <mcatanzaro src gnome org>]

The signed tag '3.13.91' was created.

Tagger: Michael Catanzaro <mcatanzaro gnome org>
Date: Mon Sep 1 10:55:31 2014 -0500

    Iagno 3.13.91

Changes since the last tag '3.13.90':

Anders Jonsson (1):
      Updated Swedish translation

Arnaud Bonatti (7):
      Don't create more than one preferences dialog.
      Readd <ctrl>Z shortcut.
      Correction to the main loop of the AI.
      Comment for when there's no move.
      Use a negamax notation.
      Rework the existing AI.
      Calculate depth a simpler way.

Chao-Hsiung Liao (1):
      Updated Traditional Chinese translation(Hong Kong and Taiwan)

Fran Diéguez (1):
      Updated Galician translations

Marek Černocký (1):
      Updated Czech translation

Michael Catanzaro (2):
      Fix wrong comment
      Prepare 3.13.91

Yosef Or Boczko (1):
      Updated Hebrew translation