v0.4.0

Features

• Add json feature: Enable json serialization and deserialization
• Add log feature: Enable request and response logs
• Add param attribute that can dynamic replace placeholder
• A new way to specity the request header with headers metadate in attribute macros
• Support use Vec<u8> to get or submit byte data
• Enhanced error handling

Changes

• Change HttpClient to builder mode. Now use RequestBuilder to create RequestWrapper
• JSON serialization and deserialization are disabled by default

Fixes

• Fix error when function return feignhttp::Result<()>