Release v20.21 to unstable

Signed-off-by: James Valleroy <jvalleroy@mailbox.org>

debian/changelog

@@ -1,3 +1,49 @@
+freedombox (20.21) unstable; urgency=medium
+
+  [ Johannes Keyser ]
+  * Translated using Weblate (German)
+
+  [ Fioddor Superconcentrado ]
+  * Translated using Weblate (Spanish)
+  * Translated using Weblate (Spanish)
+
+  [ Joseph Nuthalapati ]
+  * deluge: Sync apache2 config with Transmission
+  * deluge: Functional tests for bit-torrent group
+
+  [ Michael Breidenbach ]
+  * Translated using Weblate (Swedish)
+
+  [ Veiko Aasa ]
+  * apache: Create snake oil certificate if not exists
+  * users: Remove timeout when creating Samba user
+  * security: Fix access denied for user daemon from cron
+
+  [ n0nie4HP ]
+  * Translated using Weblate (Polish)
+  * Translated using Weblate (Polish)
+
+  [ spectral ]
+  * calibre: Fix manual page name
+
+  [ James Valleroy ]
+  * upgrades: Allow grub-pc upgrade without reinstalling grub
+  * upgrades: Update searx search engines during dist upgrade
+  * locale: Update translation strings
+  * doc: Fetch latest manual
+  * debian: Bump standards version to 4.5.1
+
+  [ Nikita Epifanov ]
+  * Translated using Weblate (Russian)
+
+  [ ikmaak ]
+  * Translated using Weblate (Polish)
+
+  [ Doma Gergő ]
+  * Translated using Weblate (Hungarian)
+
+ -- James Valleroy <jvalleroy@mailbox.org>  Mon, 28 Dec 2020 21:08:41 -0500
+
 freedombox (20.20.1) unstable; urgency=medium
 
   [ Reg Me ]

plinth/__init__.py

@@ -3,4 +3,4 @@
 Package init file.
 """
 
-__version__ = '20.20.1'
+__version__ = '20.21'