Due Date List View
https://gyazo.com/70eabd25e79ddeadf7f560632c321df9
Due dates are arranged and colored in the ascending order.
Past due dates within one week are shown in grey and will disappear after that.
To add another due date, press the "+" button 15. Then, the due date setting view will appear as described above.
The current upper limit of the number of active due dates is 100. If the number exceeds this threshold, the user will receive an alert.
To delete a due date, swipe the row to the left. Then, a "Delete" button 16 will show up. You can touch the button to delete all the information about the due date.
https://gyazo.com/ae631671ae4f588f685386700b170ce1
When the user touches a specific row, how many days are remaining is displayed.