Constrain versions to disallow Python 3.5.2

[pipermerriam]

What was wrong?

See ethereum/web3.py#1012 (comment)

Python 3.5.2 has a bug...

How can it be fixed?

In the setup.py file, add a new line for python_requires like this from web3.py: https://github.com/ethereum/web3.py/blob/master/setup.py#L33

Use the requirement string: >=3.5,!=3.5.2,<4 to restrict the python versions. It might just be a ! without the equals, I can't remember.

[Arbitrage0]

Think I got it, first timer here.