[stack] Cat 0.10.4 Release now with Graphics

The latest Cat release 0.10.4 (
http://code.google.com/p/cat-language/downloads/list ) now supports
graphics, see http://www.cdiggins.com/ for an example program. As well
several fixes have been applied to the standard library, and some new
functions have been added.

The license of Cat has now changed to MIT for the interpreter but the
source code remains public domain. So if you compile the source code
yourself, you avoid the MIT license obligation (it becomes your own
product). This should protect me against liability, and allows me to
continue using Google code hosting.

I have also been manically adding pages to the wiki (
http://code.google.com/p/cat-language/w/list )

- Christopher