Add pack and unpack to the list of Pico-8 builtins#97

luchak wants to merge 2 commits intodansanderson:maindansanderson/picotool:mainfrom

luchak:add-pack-unpack-to-pico8-builtinsluchak/picotool:add-pack-unpack-to-pico8-builtinsCopy head branch name to clipboard