The benefits are great enough to allow this and the benefits of
not allowing closures are not terribly useful.
We do not get the same benefits for modules though so we don't add
it to them.
Slight change to how assert works to support this. We no longer automatically add
a semicolon to the expressions we require the user to right them. This updates the
docs to illustrate that and reformats our integration test suite for this and
readability.
