The application can handle Todo, Event, Deadline.

However to represent repeating event, the user have to add new task every repeating period, which is cumbersome.

Adding new feature of recurring tasks, that uses crontab expression to express recurrence.

Cron is a universal expression that shows repetition. Thanks to its flexibility, we can express virtually every type of repetition we can imagine.

By adding recurring task, the user will be able to reduce the cumbersomeness of creating recurring event every time.

Let's add recurring task to represent repeating events.