Version 1.2.0

Summary

• Upgrade to protobuf lib v3

What's Changed

• Add Protoc Dependency Information to README by @seventhplacedad in #4
• Switch testing to Github Actions by @jgarzik in #5
• Refresh by @jgarzik in #6
• Upgrade to protobuf v3 by @jgarzik in #7

New Contributors

• @seventhplacedad made their first contribution in #4

Full Changelog: v1.0.1...v1.2.0