docs: update copyright, notes, changelog
diff --git a/serial/urlhandler/protocol_loop.py b/serial/urlhandler/protocol_loop.py
index 8ac8ddf..2aeebfc 100644
--- a/serial/urlhandler/protocol_loop.py
+++ b/serial/urlhandler/protocol_loop.py
@@ -6,7 +6,7 @@
 # and it was so easy to implement ;-)
 #
 # This file is part of pySerial. https://github.com/pyserial/pyserial
-# (C) 2001-2015 Chris Liechti <cliechti@gmx.net>
+# (C) 2001-2020 Chris Liechti <cliechti@gmx.net>
 #
 # SPDX-License-Identifier:    BSD-3-Clause
 #