Aboleth

=============

Hotfix: Fix the dropout noise shape so we get samples of the latent function of
the layer (rather than the observations). Also some doco tweaks.

=============

Hotfix: Fix regression whereby setting the random seed was not working with the
new distribution objects from TensorFlow (tf.distributions).

=============

Some moderate changes to the API from:

- Using TensorFlow's tf.distributions to replace Aboleth's likelihoods
- Using TensorFlow's tf.distributions to replace Aboleth's distributions

=============

Initial release of Aboleth