## feature/lua/http client

* Added a new method `response:decode()`. It decodes an HTTP response body to
  a Lua object. The decoding result depends on the response content type. The
  following content types are supported by default: `application/json`,
  `application/yaml`, `application/msgpack`. Users can define decoding rules for
  other content types by writing their own decoding functions (gh-6833).
