Support Json RPC 2.0

[Tolriq]

Thanks for your library, great source for new comers to retrofit looking for Json RPC handling.

I'd like to add support for Json RPC 2.0 to your library, are you interested in such commits ?
(Mainly support for named parameters / notifications (no id) / add the jsonrpc field)

I've added support in my fork : Tolriq@ba9a6d1.

But I'm not satisfied with the code duplication and everything but since I do not yet master Retrofit and all the converters things I chose the easy way to be sure it can work :) (Sorry for the code formatting, I tends to forgot to disable it when I work on forks)

If you have some better idea or tips on how I should manage it more clean, please share and I'll update the code and make appropriate PR.

If you have idea on how you'll handle #1 / #2 that would need future change of all this, I can look at that too, but I'm currently retrofit noob ;)

[f2prateek]

Thanks for offering to help! We've pushed back the project that needed to use this library so I think it's best if you used a fork for now - since we're not really working on this library for a while.

[Tolriq]

Ok no problem, any pointer or idea you had around #2 as it would be useful in my case too ?

[f2prateek]

You could make the class public - and in the adapter factory just check if the requested class is of JSONRRPResponse/Request - if it is you can just return null and the default converter will kick in.