Update license year

Eugene Leonovich · Eugene Leonovich · commit f4a544dfd1ea · 2018-01-11T14:12:11.000+01:00
diff --git a/LICENSE b/LICENSE
@@ -1,6 +1,6 @@
 The MIT License (MIT)
 
-Copyright (c) 2015-2017 Eugene Leonovich
+Copyright (c) 2015-2018 Eugene Leonovich
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
