- Switch from GSON to Jackson for parsing [https://github.com/apple/app-store-server-library-java/pull/58]
- Rename Status to VerificationStatus [https://github.com/apple/app-store-server-library-java/pull/59]
- Add message to APIException and update JavaDocs [https://github.com/apple/app-store-server-library-java/pull/60]