Update copyright date

Author: thoma

src/attributecode/transform.py

@@ -1,7 +1,7 @@
 #!/usr/bin/env python
 # -*- coding: utf8 -*-
 # ============================================================================
-#  Copyright (c) 2013-2018 nexB Inc. http://www.nexb.com/ - All rights reserved.
+#  Copyright (c) 2013-2019 nexB Inc. http://www.nexb.com/ - All rights reserved.
 #  Licensed under the Apache License, Version 2.0 (the "License");
 #  you may not use this file except in compliance with the License.
 #  You may obtain a copy of the License at