LICENSE in deep_cloneable-3.0.0 vs LICENSE in deep_cloneable-3.1.0

@@ -1,5 +1,5 @@
-Copyright (c) 2019 Reinier de Lange
+Copyright (c) 2021 Reinier de Lange
 
 Permission is hereby granted, free of charge, to any person obtaining
 a copy of this software and associated documentation files (the
 "Software"), to deal in the Software without restriction, including
 without limitation the rights to use, copy, modify, merge, publish,