ClassicZoo 4.33

Hey!

Small update to ClassicZoo today - this is not an April Fools' update, just a few minor bugfixes and improvements.

Of particular note is probably the addition of "New additions" and "New releases" to the Museum of ZZT browser, as well as emulating the player step sound from ZZT 3.2 which some players might enjoy. There are also noteworthy fixes to the Editor and a few other improvements.