Just a wrapper over http.Client with better errors and JSON unmarshaling.
- Add interceptors https://grpc.io/blog/grpc-web-interceptor/#what-can-i-do-with-an-interceptor
- Configure linters
- Switch to https://github.com/json-iterator/go ? https://yalantis.com/blog/speed-up-json-encoding-decoding/