update copyright year

3715b208 · Point Gerald · 9945d939 · 3715b208
Commit 3715b208 authored Dec 10, 2018 by Point Gerald
--- a/COPYING
+++ b/COPYING
                       AltaRica Public License
                   COPYRIGHT AND PERMISSION NOTICE

-ARC -- Copyright (c) 2002-2015 LaBRI - CNRS & University of Bordeaux. 
+ARC -- Copyright (c) 2002-2018 LaBRI - CNRS & University of Bordeaux. 
 See AUTHORS file. All rights reserved.

 Permission is hereby granted, free of charge, to any person obtaining a copy of