👨💼 Great work!
🦉 What's interesting is we could actually move the Footer to be rendered
directly in the Main at this point if we wanted to and we'd get the same
behavior as far as rendering the Footer only when its props or context change.
For the most part, it would be a matter of preference. A nuanced bit of
difference is that doing that would require React to check whether the props are
different every time you click the Main counter. But in practical scenarios,
this shouldn't really make much of a difference.