TensorFlow Federated 0.54.0

Release 0.54.0

Major Features and Improvements

• Added attributes to tff.learning.programs.EvaluationManager, this enables
  constructing new EvaluationManagers from existing ones.
• Added Subsample Process abstract class and the implementation of Threshold
  Sampling Process Remove introducing dependency on relayout op for control
  edges.
• Replaced usage of attrs in tff.aggregators with typing.NamedTuple.
• Removed introducing dependency on relayout op for control edges.

Breaking Changes

• Removed run_server and server_context from the tff.simulation API.
• Removed the following symbols from the tff.framework API:
  • tff.framework.local_executor_factory
  • tff.framework.DataBackend
  • tff.framework.DataExecutor
  • tff.framework.EagerTFExecutor

Bug Fixes

• Removed use of deprecated tff.learning symbols, and clear cell image
  outputs.