Tagged version prior to tensorflow migration

v0.3.5.3-alpha

tagged version before backend migration

Updates for python 3 compatibility

Thanks to @Avsecz for getting this started. The demo notebook has been updated to work with Python 3.5 as well.

v0.1-alpha

Citable release of TF-MoDISco so Ziga can cite it for his ICML comp bio submission.