Request: Handle atom error messages

[ACBullen]

Is there any intent/interest in accepting atoms as error messages? For instance if the reason a mutation errors is its unauthenticated or the record it is attempting to change doesn't exist, :unauthorized or :not_found would be the expected error return, but if I want this library to parse that into the message I'd have to check to see if I'm returning an atom everywhere I might and stringify it.

Is adding a function head that converts atoms to binaries to convert_to_payload/1 a reasonable thing, or is the assumption that users of this library catch simple atom errors and format them into more verbose errors?

[ACBullen]

Made a quick implementation in this PR

[ACBullen]

Any opinions from the maintainers on this request and the related PR?

[remi]

This as closed by #12 👌