jsonapi: Add option to unmarshal from an io.Reader and marshal to an io.Writer #327
Description
The current marshalling and unmarshalling functions in the jsonapi subpackage operate on byte slices exclusively. I think it would be very convenient if there were functions available to operate on io.Readers and io.Writers as well.
The encoding/json library exposes this through the Encoder and Decoder objects, which take an io.Reader or an io.Writer as arguments. Would it make sense to expose a similar API? If there's interest in this upstream, I would be happy to submit a PR!