Without disturbing the original example, add in our updated select and an example of it to compare the two side by side. We need to handle the "Nothing" case to make sure it looks like the original Select and add tests.
There are places where we need the select to be as wide as possible.
Since it seems like a sensible default to have all the selects expand,
we take that approach.
If we find out that this is harder, we can release use the old version.
