Odin-ai

* Move to tensorflow 2.0 and using keras for constructing neural network
* Adding specialize modules for Bayesian inference
* New distribution and distribution layers: `ZeroInflated`, `NegativeBinomialDisp`
* Add new statistical network: `MixtureDensityNetwork`, `DenseDistribution`, `DenseDeterministic` and more utilities for manipulating the output distributions in keras.

Tested against `tensorflow-2.0.0-rc1` and `tensorflow_probability-0.8.0-rc0`

Summarize the code for compatibility to `Tensorflow 1.13.0`
Prepare for the update to `Tensorflow 0.2beta` and `Tensorflow-probability 0.7`
Possibility for `Pytorch` extension in future

* Update tensorflow version to 0.13.1
* Update tensorflow-probability version to 0.6.0
* Add distribution layers and tensorflow-keras utilities

Rename the package to avoid confusion with released PYPI packages

Machine Learning:

* GMM implementation in tensorflow
* Tmatrix implementation in tensorflow
* PLDA

Neural Network:

* The basics

Data processing:

* most of utilities for speech processing