====To Duex====

Functionality:

   - Add a new to-do item.
   - Mark a to-do item as completed.
   - Remove a to-do item.
   - View all to-do items.

Advanced Features (Stretch):

 - Persist the to-do list to a file (so data is saved between application runs).
 - Allow users to set priorities for tasks (e.g., High, Medium, Low).
 - Allow users to set due dates.
 - Search for tasks based on name or status (completed or pending).
 - Sort tasks by priority, date, or name.