Also changes the calling order of -accessTokenWith…password: to more closely match other ANAuthenticator APIs.
Required adding support for url encoding parameters in ANRequest, and also to store the JSON error message into the error object in -sendRequestWithRepresentationCompletion
…y in all circumstances This reverts commit c1eab8c and replaces it with more general code.
We want to make it update when we repost it.
This was clarified by a later revision of the spec.
… by a user