(Applies to verison 0.1.12d rcsd)

1. Lua's 'tostring' function is exposed now. It converts things to strings differently than tostr, including printing a table's address in memory.

2. After doing "install_demos()" or "install_games()", something seems to go majorly wrong with pico-8. All nils become... nulls?!
   You can see this by trying to print a non-existing global/table value which would normally print [nil], but now prints [(null)].
   What is the type of a null? It's a null, too! (No, not the string "null" - but a null object itself)
   (It's clearly not a legal lua value)

You can see the above oddities via my https://www.lexaloffle.com/bbs/?tid=36381 cart, if you'd like.