release_2.0.0rc0

User API Changes

• Deprecate python_binary in favor of
  pex_binary (#10939)
• Deprecate [protoc].runtime_targets in favor of
  [python-protobuf].runtime_dependencies (#10926)
• Use the package goal to build setup-py dists. (#10919)
• Deprecate --print-exception-stacktrace to
  --print-stacktrace (#10912)

Plugin API Changes

• Use TransitiveTargetsRequest as input for resolving
  TransitiveTargets (#10915)
• Add await Get(Addresses, UnparsedAddressInputs)
  (#10913)
• Upgrade to Pex 2.1.18. (#10938)

New Features

• Add gRPC Python code generation (#10937)
• Add MyPy Protobuf plugin support (#10931)
• Add output_path field to python_binary,
  python_awslambda, and archive (#10899)

Bugfixes

• Fix for log messages/dynamic UI teardown conflict (#10940)
• Fix some dependencies-like fields not showing up with project
  introspection (#10923)
• Send SIGTERM to child processes upon SIGINT (#10930)
• Fix Python 3.8 syntax not working with dependency inference (#10907)
• Plumb ca_certs_path to the plugin resolver. (#10910)

Documentation

• Differentiate between User API vs. Plugin API changes in changelog
  (#10916)
• Streamline some goal descriptions. (#10911)