Prepare release 2.1

CHANGELOG.rst

@@ -9,6 +9,9 @@ and this project adheres to `Semantic Versioning`_.
 Unreleased
 ----------
 
+`2.1`_ - 2022-01-04
+-------------------
+
 Added
 ~~~~~
 
@@ -19,6 +22,7 @@ Changed
 
 * The subject linked to a group can now be edited in the normal group edit form.
 * Names of subjects no longer have to be unique (short names still have to be).
+* Update German translations.
 
 Fixed
 ~~~~~
@@ -250,3 +254,4 @@ Fixed
 .. _2.0rc2: https://edugit.org/AlekSIS/Official/AlekSIS-App-Chronos/-/tags/2.0rc2
 .. _2.0rc3: https://edugit.org/AlekSIS/Official/AlekSIS-App-Chronos/-/tags/2.0rc3
 .. _2.0: https://edugit.org/AlekSIS/Official/AlekSIS-App-Chronos/-/tags/2.0
+.. _2.1: https://edugit.org/AlekSIS/Official/AlekSIS-App-Chronos/-/tags/2.1