Using Serializer Obscures Links and Pagination Data

Problem/Motivation

Our current serializer option appears to drop anything other than the data property. This means that we lose access to things like pagination metadata.

Steps to reproduce

* Create a JsonApiClient instance that uses Jsona as a serializer.
* Make a request to a data set that would typically be paginated (or force it with something like `?page[limit]=5`
* Notice that links.pagination is not returned.

Proposed resolution

It should be possible today to use the `rawResponse` option to retrieve this data when using a serializer, but it seems like it would be much friendlier to also provide this metadata when deserializing.

Remaining tasks

User interface changes

API changes

Data model changes