move code blocks around - code & macros not interlaced
main loop/UX tweaks
comments & cleanup
strip bin target
add "all" target
extract NUMBER from Forth to asm
add . word
fix 10x error in _itoa
return 0 on Forth stack underflow
always terminate _itoa scratch buffer
comments
remove Forth word that dups asm
renaming closer to how pronounced
add/subtract nums from stack