todo.txt

- peephole optimize:
	rst 24	; stk_pop_de
	rst 16	; stk_push_de
	ld de,nnnn

	->

	ld de,nnnn

- forward gotos could be optimized to branches

- dead code and inlining optimizations can't distinguish words that have same name
	- therefore the compiler does not really support defining multiple words with same name
	-> raise an error when a word is redefined and document the behavior in README

- document remaining words in README

- can we make machine code version of . any faster (it's really slow)?
	- yes, write specializations for base 10 and base 16?
	- https://wikiti.brandonw.net/index.php?title=Z80_Routines:Other:DispHL

- BUG: errors and warnings have incorrect line number for words at the end of the line
	- store last_word_line in next_symbol

- formatting of negative literals in listing files is broken, from demons.lst:
	4ae1 01 ec fa        ld bc,$fffffffffffffaec