update copyright

Author: puredanger

README.md

@@ -126,7 +126,7 @@ org.clojure/tools.deps.graph {:mvn/version "1.1.68"}
 
 # Copyright and License
 
-Copyright © 2019 Rich Hickey, Alex Miller, and contributors
+Copyright © 2019-2022 Rich Hickey, Alex Miller, and contributors
 
 All rights reserved. The use and
 distribution terms for this software are covered by the