-- moving to Bolton Optimizer
Model is now just a convenient wrapper and example for users.
Optimizer holds ALL Bolton privacy requirements.
Optimizer is used as a context manager, and must be passed the model's layers.
Unit tests incomplete, committing for visibility into the design.
-- update to include pull request changes
changes include:
parameter renaming,
changing to mixin,
moving model to compile,
additional tests,
fixing huber loss
