GameKit iOS 13.2 to 13.4 API Differences

GKLocalPlayer.h
Added -[GKLocalPlayer fetchItemsForIdentityVerificationSignature:]
Modified -[GKLocalPlayer generateIdentityVerificationSignatureWithCompletionHandler:]
AvailabilityDeprecation Message
FromAvailablenone
ToDeprecatedAPI deprecated. Use fetchItemsForIdentityVerificationSignature: and the teamPlayerID value to verify a user identity.