* Note that additionalProperties fields are not currently supported and may
only be accessed in raw form. Shouldn't be a big deal because only the Buzz
API uses them extensively.
* Added Reference objects to encapsulate API calls.
* Added Result objects to encapsulate API responses.
* Changed the return value of APIClient#execute to Result.
* Changed the method signature of APIClient#execute to support named params.
* Added APIClient#execute! which throws exceptions on error.
* Added automatic parsing code to better allow for complex nested structures.
* Added error parser.
* Added module for pagination in parsers.
Bob Aman