#4 Major Stack Bug Fix

[Dean Michael Berris]

This fixes the bug that causes a lot of problems when
defining and initializing stacks using the v 0.2
instruction set.

There is a missing break instruction at the part where
the dehaviour for STACK_INIT is defined, which causes
problems because when you initialize the stack, it
proceeds to the next seciton in the switch case
branches, that pushes a value from a memory location
(STACK_PUSH_X). This is fixed by this patch. The 0.2
branch is still unstable.