Run "TZ=UTC0 admin/update-copyright".
Run "TZ=UTC0 admin/update-copyright $(git ls-files)".
* lisp/play/morse.el: Use lexical-binding. * lisp/play/studly.el: Use lexical-binding. * test/lisp/play/morse-tests.el: New file. * test/lisp/play/studly-tests.el: New file.