Fix type in ./README
Move majority of code.
Add missing 'local' decleration.
Clear up testing scripts.
Remove unnecessary submodule.
Fix bug in interpreter loop.

Running the function more than once would yield a coroutine error.
Fix problems in CALL, TAILCALL
Fix problem in RETURN.
Implement SETTABLE.
Implement NEWTABLE.
Implement SELF.
Implement TEST.
Implement TESTSET.
Implement FORLOOP, FORPREP, TFORLOOP.
Improve interpreter loop.
Implement SETLIST.
Implement VARARG.
Implement GETUPVAL, SETUPVAL, CLOSURE.
Remove debugging info.