BUG-201: PyJWT v1.0.7 introduces a bug where PyCrypto becomes a required dependency.

The fix has been committed, but not yet released to PyPI. In the meantime, pin to v0.1.6.
Merge pull request #3 from jnovinger/BUG-201_pyjwt_v1.0.7_breaks_imports

BUG-201: PyJWT v1.0.7 introduces a bug where PyCrypto becomes a required...