Bumped license year

Author: IanLee1521

LICENSE

@@ -1,6 +1,6 @@
 Copyright © 2006-2009 Johann C. Rocholl <johann@rocholl.net>
 Copyright © 2009-2014 Florent Xicluna <florent.xicluna@gmail.com>
-Copyright © 2014-2018 Ian Lee <IanLee1521@gmail.com>
+Copyright © 2014-2020 Ian Lee <IanLee1521@gmail.com>
 
 Licensed under the terms of the Expat License