update copyright year

stbuehler · stbuehler · commit b4e67bfe09ed · 2021-08-09T12:33:56.000+02:00
diff --git a/LICENSE b/LICENSE
@@ -1,6 +1,6 @@
 The MIT License
 
-Copyright (c) 2017 Stefan Bühler
+Copyright (c) 2021 Stefan Bühler
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
