Update changelog for 2.1

CHANGELOG.rst

@@ -6,8 +6,8 @@ All notable changes to this project will be documented in this file.
 The format is based on `Keep a Changelog`_,
 and this project adheres to `Semantic Versioning`_.
 
-Unreleased
-----------
+`2.1`_ - 2021-11-05
+-------------------
 
 Added
 ~~~~~
@@ -441,3 +441,4 @@ Fixed
 .. _2.0rc6: https://edugit.org/AlekSIS/Official/AlekSIS/-/tags/2.0rc6
 .. _2.0rc7: https://edugit.org/AlekSIS/Official/AlekSIS/-/tags/2.0rc7
 .. _2.0: https://edugit.org/AlekSIS/Official/AlekSIS/-/tags/2.0
+.. _2.1: https://edugit.org/AlekSIS/Official/AlekSIS/-/tags/2.1