More specific than ever!

Sorry, gang - the version of Specific Gravity I originally uploaded for the #BeerSK jam was actually broken beyond belief. One of those fun bugs that inexplicably pops up in the final build, even though the game still plays perfectly in the editor and every other build before that had been fine and I didn't change anything that should have broken things so dramatically?!

Anyway. It's fixed now, and I made a few cosmetic and gameplay tweaks as well.