Hello World - 0.2

As the name implies, this is my first Pygame project. Made out of 100% concentrated boredom. When I made this game, I was more focused on learning the language than good style or how to distribute the program. The code is some really sloppy stuff, and the README isn't particularly helpful. I plan on using this program as my personal sandbox to learn new Pygame features, so if anyone sees any mistakes at this point, I'd appreciate advice/critique of any kind. It's an honor to be here! I really hope to learn a lot!

I've totally redone Hello World to be more abstract and object-oriented. The alien is now animated, I've created a nicer-looking (although more cryptic) level editor, and I've included a massive library to make it easier to make derivatives in the future. There's a lot more code than necessary, but that's OK. If anyone finds the improvements worth it, comments are always welcome.