0.3.1

What's Changed

• readme - more readable options by @andriykohut in #26
• Bump protobuf from 3.20.2 to 3.20.3 by @dependabot in #27
• Upgrade to protobuf v4 by @andriykohut in #28
• re-compile pb2s with new versions of grpc tools by @andriykohut in #29

Full Changelog: 0.3.0...0.3.1