Improvements

[Kronuz]

• PEP 8
• Lots of missing variables/misspellings
• Using random with system's PRNG if possible
• Python 2 support
• Package configuration for setup.py

[savagezen]

@Kronuz Thanks for your interest and help!

There was a specific effort made to keep with the Python 3(.6) standard of using secrets.choice() instead of random.randint() in this commit. I'm not sure which I'd prefer to be used. If you resubmit replacing random.randint() with secrets.choice() I'd be happy to merge.

[Kronuz]

It is very much the same thing, now that I’m using random.SystemRandom, since you don’t really use any of the other functions specific to secrets; and using random gives us backward compatibility.

[Kronuz]

It is actually exactly what secrets uses. Except secrets is only available in Python 3.6+

https://github.com/python/cpython/blob/master/Lib/secrets.py#L22