Don't create unnecessary objects when mapping temporary managed objects POST'd without identification attributes. closes #1149
Fix issues with mapping errors from 5xx payloads. Ensure `acceptableStatusCodes` tracks the status codes configured in the response descriptors. fixes #1157
Fix bug with status code handling when `statusCodes` is `nil` for any response descriptor.
Add test case for unexpected NSSet. #1118
Fix issue in which managed objects that are the children of non-managed objects were refetched and assigned as a collection rather than as a singular value. fixes #1118
Add support for transforming strings 'Y' and 'N' to boolean NSNumber objects
Add unit tests for mapping 'n' and 'y' characters as Boolean values. refs #1151