This codebase should be upgraded to TensorFlow 2.0

[nbro]

Currently, I am having several issues to execute even the simplest example described in the README file because you have used pre-historic versions of TensorFlow and related packages. So, I think you should upgrade this package to use TensorFlow 2.0. TensorFlow 1.9 cannot even be installed anymore with pip, if I understood correctly. It shouldn't be so difficult or tedious to upgrade the codebase! My fork https://github.com/nbro/sadl has been upgraded, so, if you want, you can base your new upgraded code on that.