update copyright year in the LICENSE

itchyny · itchyny · commit 83ae633be323 · 2019-01-19T02:11:26.000+09:00
diff --git a/LICENSE b/LICENSE
@@ -1,6 +1,6 @@
 The MIT License (MIT)
 
-Copyright (c) 2013-2017 itchyny
+Copyright (c) 2013-2019 itchyny
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
