AUTHORS: Run update-copyright.py

Filling in the list of contributors from the Git history.

AUTHORS

+lesson-template was written by:
+Aaron O'Leary <aaron.oleary@gmail.com>
+Andy Boughton <abought@gmail.com>
+Bill Mills <mills.wj@gmail.com>
+Greg Wilson <gvwilson@software-carpentry.org>
+James Allen <jamesallen0108@gmail.com>
+John Blischak <jdblischak@gmail.com>
+Raniere Silva <raniere@ime.unicamp.br>
+Rémi Emonet <remi.emonet@reverse--com.heeere>
+Timothée Poisot <tim@poisotlab.io>
+Trevor Bekolay <tbekolay@gmail.com>
+W. Trevor King <wking@tremily.us>