Update copyright year in README

Author: weavejester

README.md

@@ -512,7 +512,7 @@ indentation for form argument `(let...)`.
 
 ## License
 
-Copyright © 2021 James Reeves
+Copyright © 2022 James Reeves
 
 Distributed under the Eclipse Public License either version 1.0 or (at
 your option) any later version.