WOWOWOWOWOWOW. Added CPPN -> function object conversion. And working tests!

Works for non-recurrent cppns, so added recursion check. It's pretty slick, some tests indicate speedups of 4-13x depending on complexity. Hopefully that translates into real work performance. I can also use these guys to start webworkers that execute cppns without any library requirements.

ALSO, can use this to pass functions over the wire, instead of lots of cppn/genome structure. It's as compact as these things can get.