People who have emailed me with corrections and suggestions on the
tutorial. As of the most recent release, this include: Florian Ragwitz,
Mauro Andreolini, Jim Howard, Giovanni Gigante, William Moreno,
-Bryan Roach, Ashley Berlin, David Kamholz, and Kevin Old.
+Bryan Roach, Ashley Berlin, David Kamholz, Kevin Old, Henning Sprang,
+and Jeremy Jones.
=back