Switch to Python 3.5

[Abraxos]

Using Python 3.4 causes a deprication warning to come up in the RSA package. This is fixed in its most recent version for Python 3.5

/home/eugene/.virtualenvs/hermeslib-dev/lib/python3.4/site-packages/rsa/pem.py:92: DeprecationWarning: decodestring() is a deprecated alias, use decodebytes()
return base64.decodestring(pem)

[CanntAim]

I will need to go through and check for compatibility with python 3 on my end as well...