[iagno] Created tag 3.33.91

[Arnaud B. <arnaudb src gnome org>]

The unsigned tag '3.33.91' was created.

Tagger: Arnaud Bonatti <arnaud bonatti gmail com>
Date: 1566034738 +0200

    Release 3.33.91.

Changes since the last tag '3.33.90':

Anders Jonsson (1):
      Update Swedish translation

Arnaud Bonatti (6):
      Unrelax the appdata validation.
      Fix notifications bug.
      Improve AI.
      Introduce mainlines.
      Finalize AIs.
      Prepare 3.33.91.

Bruce Cowan (1):
      Update British English translation

Daniel Șerbănescu (1):
      Update Romanian translation

Kukuh Syafaat (1):
      Update Indonesian translation

Marek Černocký (1):
      Updated Czech translation

Sveinn í Felli (1):
      Update Icelandic translation