NOTICE.txt in ngt-0.3.1 vs NOTICE.txt in ngt-0.3.2

@@ -1,4 +1,5 @@
+Copyright 2016-2020 Yahoo Japan Corporation
 Copyright 2019-2020 Andrew Kane
 
 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