update year in LICENSE file

mmcky · mmcky · commit 6a6309e8a4e8 · 2019-11-05T10:52:42.000+11:00
diff --git a/LICENSE.txt b/LICENSE.txt
@@ -1,5 +1,5 @@
 
-Copyright © 2013, 2014 Thomas J. Sargent and John Stachurski: BSD-3
+Copyright © 2013-2019 Thomas J. Sargent and John Stachurski: BSD-3
 All rights reserved.
 
 Redistribution and use in source and binary forms, with or without
