Update the changelog for 2.0rc1

CHANGELOG.rst

@@ -6,6 +6,14 @@ 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`_.
 
+`2.0rc1`_ - 2021-06-23
+----------------------
+
+Changed
+~~~~~~~
+
+* Use semantically correct html elements for headings and alerts.
+
 `2.0b3`_ - 2021-06-16
 ----------
 
@@ -13,7 +21,6 @@ Changed
 ~~~~~~~
 
 * Use a more speaking name for preference section ("Timetables" instead of "Chronos").
-* Use semantically correct html elements for headings and alerts.
 
 Fixed
 ~~~~~
@@ -179,3 +186,4 @@ Fixed
 .. _2.0b1: https://edugit.org/AlekSIS/Official/AlekSIS-App-Chronos/-/tags/2.0b1
 .. _2.0b2: https://edugit.org/AlekSIS/Official/AlekSIS-App-Chronos/-/tags/2.0b2
 .. _2.0b3: https://edugit.org/AlekSIS/Official/AlekSIS-App-Chronos/-/tags/2.0b3
+.. _2.0rc1: https://edugit.org/AlekSIS/Official/AlekSIS-App-Chronos/-/tags/2.0rc1