LICENSE.txt in in_threads-1.5.1 vs LICENSE.txt in in_threads-1.5.2

@@ -1,5 +1,5 @@
-Copyright (c) 2009-2018 Ivan Kuchin
+Copyright (c) 2009-2019 Ivan Kuchin
 
 Permission is hereby granted, free of charge, to any person obtaining
 a copy of this software and associated documentation files (the
 "Software"), to deal in the Software without restriction, including
 without limitation the rights to use, copy, modify, merge, publish,