TensorFlow Federated 0.40.0

Release 0.40.0

Major Features and Improvements

• Skip model updates that are non-finite in
  tff.learning.templates.build_apply_optimizer_finalizer.

Breaking Changes

• Removed deprecated APIs in tff.learning.framework
• Update the Python package scripts to use Python 3.10 by default.
• Remove module wildcard imports from init.py files in TFF.
• Update the Python package scripts to use Python 3.10 by default.

Bug Fixes

• Remove functools.wraps within tff.tf_computation.
• Fix typo in iNaturalist dataset docstring.