App displays a text field and a button for adding a todo with text from text field. Todos are removable. Todos are displayed sorted by creation, with newest being higher. You can change the order of todos. You cannot create a todo with empty text and if you try user is informed in a proper way.
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- write logic for adding a todo
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- call addTodo
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- todos should be properly ordered
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- write logic for removing a todo
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- we should be able to remove a todo so we need to call removeTodo somewhere
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- we should be able to change order of todos