Prepare release 2.1

aleksis/apps/untis/apps.py

@@ -12,7 +12,7 @@ class UntisConfig(AppConfig):
     copyright_info = (
         ([2018, 2019, 2020, 2021], "Jonathan Weth", "dev@jonathanweth.de"),
         ([2018, 2019], "Frank Poetzsch-Heffter", "p-h@katharineum.de"),
-        ([2019, 2020], "Dominik George", "dominik.george@teckids.org"),
+        ([2019, 2020, 2021], "Dominik George", "dominik.george@teckids.org"),
         ([2019, 2020], "Tom Teichler", "tom.teichler@teckids.org"),
         ([2019], "Julian Leucker", "leuckeju@katharineum.de"),
         ([2019], "mirabilos", "thorsten.glaser@teckids.org"),