StoreKit macOS 10.15 Beta 4 to Beta 5 API Differences

SKArcadeService.h

Added SKArcadeService

Added +[SKArcadeService registerArcadeAppWithRandomFromLib:randomFromLibLength:resultHandler:]

Added +[SKArcadeService arcadeSubscriptionStatusWithNonce:resultHandler:]

Added +[SKArcadeService repairArcadeApp]