Orangutans grok Common Lisp

This being the season to be jolly (and eat bananas), I produced a magical piece of software: a compiler and decompiler for the language Ook!  Which proves that orangutans grok Common Lisp.

You can try out this recreational and magical piece of software by downloading the library from common-lisp.net.  A brief introduction can be found, of course, in the library (if you can see it!)

Please send bananas and DO NOT say "monkey"!