[gnome-shell] Created tag 3.20.4

[Florian Müllner <fmuellner src gnome org>]

The unsigned tag '3.20.4' was created.

Tagger: Florian Müllner <fmuellner gnome org>
Date: Fri Aug 19 23:38:49 2016 +0200

    Tag release 3.20.4

Changes since the last tag '3.20.3':

Bruce Cowan (1):
      Updated British English translation

Florian Müllner (8):
      location: Update for PermissionStore DBus API changes
      calendar-server: Remove an unnecessary check
      calendar-server: Minor optimization
      calendar-server: Fix a memory leak
      calendar-server: Fetch default zone from client
      calendar-server: Get recurrence ID from occurrences
      calendar-server: Use the actual recurrence ID of events
      Update to 3.20.4

Hyungwon Hwang (1):
      background: free MetaBackground explicitly when its MetaBackgroundActor is destroyed

Piotr Drąg (1):
      Updated Polish translation