Love your library!

Say you have some code like this:

async void Start()
{
    await Await.Seconds(5).ConfigureAwait(this);
    transform.position = new Vector3(1, 2, 3);  // will crash if object was destroyed
}

Currently, if the GameObject or Component is destroyed, the continuation runs immediately, which would cause a crash. I think it would be more intuitive if the continuation were cancelled instead. This is probably what the user wants most of the time and is consistent with how coroutines work.