v2.2.0

⭐️New Features

• SOFATracer support Zipkin version 2.X.X. #23
• SOFATracer support HttpClient plugin and also sync/async usage. #17
• SOFATracer support ARK plugin. #61
• SOFA tracer support standard datasource plugin. #53

🐞Bug fixes

• Fix SOFARPC tracer model compatible with Zipkin. #65
• Fix SOFATracer remote report data to Zipkin version 2.1.X problem. #57 #60

🔨Optimize

• Use CAS operation to eliminate synchronized block in Sample Implementation. #51
• Optimize auto-configuration. #71

🔨Code or Document Refactor

• Update ReadMe #67
• Change SOFATracer Usage Document to http://www.sofastack.tech