Remove years from copyright statements.

Author: DavidAnson

Diff for: LICENSE

@@ -1,6 +1,6 @@
 The MIT License (MIT)
 
-Copyright (c) 2015-2022 David Anson
+Copyright (c) David Anson
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal

Diff for: demo/default.htm

@@ -30,7 +30,7 @@
       <div class="flex-fill"></div>
       <footer><a href="#" id="copyLink">Copy Link</a></footer>
       <div class="flex-fill"></div>
-      <footer>Copyright &copy; 2015-2022 by <a href="https://dlaa.me/">David Anson</a></footer>
+      <footer>Copyright &copy; <a href="https://dlaa.me/">David Anson</a></footer>
     </div>
   </div>
   <script src="markdown-it.min.js"></script>

Diff for: helpers/LICENSE

@@ -1,6 +1,6 @@
 The MIT License (MIT)
 
-Copyright (c) 2015-2022 David Anson
+Copyright (c) David Anson
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal