Add right copyright to handlers.go

irc/handlers.go

@@ -1,5 +1,7 @@
 // Copyright (c) 2012-2014 Jeremy Latt
-// Copyright (c) 2016-2017 Daniel Oaks <daniel@danieloaks.net>
+// Copyright (c) 2014-2015 Edmund Huber
+// Copyright (c) 2016-2018 Daniel Oaks <daniel@danieloaks.net>
+// Copyright (c) 2017-2018 Shivaram Lingamneni <slingamn@cs.stanford.edu>
 // released under the MIT license
 
 package irc