undo_manager.rb in alexandria-book-collection-manager-0.7.2

- old
+ new

@@ -1,4 +1,6 @@
+# frozen_string_literal: true
+
 # Copyright (C) 2004-2006 Laurent Sansonetti
 #
 # Alexandria is free software; you can redistribute it and/or
 # modify it under the terms of the GNU General Public License as
 # published by the Free Software Foundation; either version 2 of the