UserNotifications iOS 11.4 to 12.0 API Differences

UNNotificationCategory.h
Added UNNotificationCategory.categorySummaryFormat
Added +[UNNotificationCategory categoryWithIdentifier:actions:intentIdentifiers:hiddenPreviewsBodyPlaceholder:categorySummaryFormat:options:]
UNNotificationContent.h
Added UNNotificationContent.summaryArgument
Added UNNotificationContent.summaryArgumentCount
Added UNMutableNotificationContent.summaryArgument
Added UNMutableNotificationContent.summaryArgumentCount
UNNotificationSettings.h
Added UNAuthorizationStatusProvisional
Added UNNotificationSettings.criticalAlertSetting
Added UNNotificationSettings.providesAppNotificationSettings
UNNotificationSound.h
Added UNNotificationSoundName
Added UNNotificationSound.defaultCriticalSound
Added +[UNNotificationSound defaultCriticalSoundWithAudioVolume:]
Added +[UNNotificationSound criticalSoundNamed:]
Added +[UNNotificationSound criticalSoundNamed:withAudioVolume:]
Modified +[UNNotificationSound defaultSound]
Declaration
From+ (nonnull instancetype)defaultSound
To@property (class, nonatomic, readonly, copy, nonnull) UNNotificationSound *defaultSound

Modified +[UNNotificationSound soundNamed:]
Declaration
From+ (nonnull instancetype)soundNamed:(nonnull NSString *)name
To+ (nonnull instancetype)soundNamed:(nonnull UNNotificationSoundName)name

UNUserNotificationCenter.h
Added UNAuthorizationOptionCriticalAlert
Added UNAuthorizationOptionProvidesAppNotificationSettings
Added UNAuthorizationOptionProvisional
Added -[UNUserNotificationCenterDelegate userNotificationCenter:openSettingsForNotification:]