Trees are hard

don;t hit your head against them
IntTree updated

Updated to use a IntTree and IntTreeNode type. Added in a remove
funcition. Untested.
Tests refactored - remove not working

Remove is not in fact working. poop.
Testing - issues identified

Two issues identified through test refactor:

1) Does not remove final node ever
2) Poss related - doesn't like multiple cases of the same number
I HATE TREES. BURN THEM ALL

D: