TensorFlow Federated 0.78.0

Release 0.78.0

Major Features and Improvements

• Moved aggregation from https://github.com/google-parfait/federated-compute
  to TFF to consolidate the federated language and remove circular
  dependencies.

Breaking Changes

• Updated rules_license to version 0.0.8.
• Removed elias_gamma_encode module.
• Removed tensorflow_compression dependency.