Huge number of warnings in test runs

[shuttle1987]

Right now there are a huge number of warnings that are present in a test run. It would be good to get these to go away.

[shuttle1987]

There's a ton of these getting spewed out from tensorflow:

  /home/travis/virtualenv/python3.5.6/lib/python3.5/site-packages/tensorflow/python/util/tf_inspect.py:75: DeprecationWarning: inspect.getargspec() is deprecated, use inspect.signature() instead
    return _inspect.getargspec(target)

[shuttle1987]

While this is annoying as it may obscure a real problem I'm marking this as lower priority.

[shuttle1987]

For now just running tests locally like this:

python -m pytest --disable-pytest-warnings