Release 0.2.2

What's Changed

• More chain api by @qicosmos in #250
• begin to support multiple db by @qicosmos in #251
• fix #252 1.创建表的时候带命名空间,表创建失败 by @raohj1987 in #254
• fix for pg by @qicosmos in #255
• fix for inject by @qicosmos in #256
• Async by @qicosmos in #258
• Update json_reader.hpp by @Mounmory in #259
• Add range partition chain builders by @qicosmos in #260
• Use IF NOT EXISTS for PostgreSQL index creation by @qicosmos in #263
• 修复多线程并发查询时的线程安全问题 (#238) + 全面更新 README 文档 by @Alex-zry-2333 in #264

New Contributors

• @Mounmory made their first contribution in #259
• @Alex-zry-2333 made their first contribution in #264

Full Changelog: 0.2.1...0.2.2