Mark T. Holder

fwiw, I think building a python interpreter with symbols turned on, and then running this through valgrind would probably make the pain point obvious. but it would be quite slow.

Hi, We probably need to write that reader to not use recursion to handle huge trees. Most trees have are balanced enough that (even if they are huge) they don't...

PS: I'm not sure what is going on with the huge diff in `user`. I'd guess that the tests are largely IO bound, but I don't know why that doesn't...

doh! fixed.

Most of changes and typedefs make sense to me. Is there a reason that `rate_cats`, `rate_matrices` and `states` should not be `unsigned int`s? I realize that they won't hit limit...