- Add error message to APIException [#48]
- Add support for reading unknown enum values [#35]
- Add support for Xcode and LocalTesting environments [#34]
- Add error codes from App Store Server API v1.9 [#33]
- Add new fields from App Store Server API v1.10 [#27]
- Document error codes [#23]
- Correct naming of SignedDataVerifier to match other libraries [#40]