Version 0.5.0

Summary

• Add Sync, Export(ASCII), Export(binary) APIs
• Add several API tests
• Bug fixes
• Freshen deps

What's Changed

• Test tool, and first tests by @jgarzik in #13
• Replace Travis with Github Actions by @jgarzik in #14
• tests: improve open/close test by @jgarzik in #15
• Add a few tests by @jgarzik in #16
• tests: add basic tests for get API by @jgarzik in #17
• Format docs by @jgarzik in #18
• Lookup fix by @jgarzik in #19
• tests: add negative Get test by @jgarzik in #20
• [doc] Move format docs to another repo by @jgarzik in #21
• add Sync API operation by @jgarzik in #22
• Fix and re-enable bucket cache by @jgarzik in #23
• Add ASCII export API by @jgarzik in #25
• tests: add First/Next-Key test by @jgarzik in #26
• Minor cleanups. by @jgarzik in #27
• Add binary export API by @jgarzik in #28
• README: update statuses by @jgarzik in #29
• Version 0.5.0 by @jgarzik in #30

Full Changelog: v0.2.1...v0.5.0