Adds nbody test TODO.
Supports unary minus.
Fixes incorrect addition of slots below new arith ins.
Adds weird fix to not allocate registers in-place (buggy when rewriting)
Fixes leaking object keys as literals.
Fixes TSETV and TGETV operand values.
Prevents segfault caused by null var decl.
Adds test for typeof inside of functions.
Fixes memberexpression duplicating registers.
Fixes another method call register allotment case.
Adds math primitive for nbody test.