UserNotifications watchOS 3.2 to 4.0 API Differences

UNNotificationCategory.h
Removed UNNotificationCategoryOptionNone
Added UNNotificationCategoryOptionNone
UNNotificationSettings.h
Added UNShowPreviewsSetting
UNUserNotificationCenter.h
Modified -[UNUserNotificationCenterDelegate userNotificationCenter:didReceiveNotificationResponse:withCompletionHandler:]
Declaration
From- (void)userNotificationCenter:(nonnull UNUserNotificationCenter *)center didReceiveNotificationResponse:(nonnull UNNotificationResponse *)response withCompletionHandler:(nonnull void (^)())completionHandler
To- (void)userNotificationCenter:(nonnull UNUserNotificationCenter *)center didReceiveNotificationResponse:(nonnull UNNotificationResponse *)response withCompletionHandler:(nonnull void (^)(void))completionHandler