Added collisions, and a bunch of minor code-tweaks and fixes. Enemies would push you around as they moved to the player, but now they stop at a minimum distance, for... reasons (I felt like it mostly... <_<).

Also now that I have Git all set-up with Sublime Text, the number of commits I make per day have increased by something like 20 times. So yeah, all the commits.

And I made a thing for Alien Frog, because why not?