v0.7.0

What's Changed

• docs: add java doc for TableSchema by @fengjiachun in #21
• feat: cache pojo mapper by @fengjiachun in #22
• feat: remove duration types by @fengjiachun in #23
• feat: upgrade proto to 0.4.3 by @fengjiachun in #24
• fix: datatime millis by @fengjiachun in #25
• feat: friendly api for table schema by @fengjiachun in #26
• release: v0.7.0 by @fengjiachun in #27

Full Changelog: v0.5.1...v0.7.0