Went through and fixed small PEP-8 errors

Anything that showed up less than 10 times when running `pep8 --count`, I fixed. This includes all instances of E112, E113, E124, E222, E272, E502, E502, E703, E711, E713, E714, E721, and W601.

Note: I'm a Python rookie, so it'd be a good idea to briefly check if I accidentally broke something. I don't think I did.