Miscellanenous whitespacing and minor tweaks I made while reading the source

I was going over your fine library and while learning/reading how it worked, I did some style changes. Mostly PEP8 changes so my linter would stop complaining.

Also fixed a bug:  	1dc7157
And a minor enhancement:  	b453702

To see a diff without all the whitespace, you can see:
https://github.com/crccheck/RaspberryPI_WS2801_Bridge/compare/e68ad61...d9a37be?w=1