Remove SetRecursion call, .Recurse is now public.
Remove unused function
Add tests for ByteSize
Simplify rpcService.Index

* Just pass the request value through
* Remove now unnecessary function newIndexRequestWithMeta
Simplify rpcService.Index

* Just pass the request value through
* Remove now unnecessary function newIndexRequestWithMeta
Improve error handling for HTTP

* Add ErrorHttp type for marshaling afind errors over JSON
* Clean up and remove unused functions, normalize error names
Add errors test module
Test coverage improvements