u3d.rb in u3d-1.3.0

- old
+ new

@@ -1,4 +1,6 @@
+# frozen_string_literal: true
+
 ## --- BEGIN LICENSE BLOCK ---
 # Copyright (c) 2016-present WeWantToKnow AS
 #
 # Permission is hereby granted, free of charge, to any person obtaining a copy
 # of this software and associated documentation files (the "Software"), to deal