Tangxiaozhi 1.2.0

Tangxiaozhi 1.2.0 is the initial version of 1.2.x release series.

What's Changed

• Serverless transformation by @VictorHuu in #51
• Gateway&Traffic Limit&GRPC&JVM Optimization&Log by @VictorHuu in #53
• Fix the login API by @VictorHuu in #55

Full Changelog: v1.1.2...v1.2.0

Deprecated

1. /api/login will be redirected to the /api/login/pass for patient-dedicated purpose.