CoreText iOS 13.0 Beta 1 to Beta 2 API Differences

CTFontManager.h
Added CTFontManagerRegisterFontsWithAssetNames()
CTFontManagerErrors.h
Added kCTFontManagerErrorFontAssetNameKey
Added kCTFontManagerErrorRegistrationFailed
Added kCTFontManagerErrorMissingEntitlement
Added kCTFontManagerErrorInsufficientInfo
Added kCTFontManagerErrorCancelledByUser
Added kCTFontManagerErrorDuplicatedName