TensorFlow Federated 0.23.0

Release 0.23.0

Major Features and Improvements

• Deprecated tff.learning.build_federated_averaging_process.
• Added an API to convert tf.keras.metrics.Metric to a set of pure
  tf.functions.

Breaking Changes

• Renamed ProgramStateManager.version to ProgramStateManager.get_versions.

Bug Fixes

• Fixed the "datasets/" path in the working with TFF's ClientData tutorial.