PyPi Package Update

[matthax]

Looks like the PyPy package for this library isn't updated and doesn't install the current version correctly.

pip install spitfire

Results in a 0.0.1 version with no modules.

[re-masashi]

Hi @matthax. I have actually created a port for Python 3 and currently, I maintain that package in PyPi. You can use Spitfire3, that is, the port I made. Cheers!