Sanity.ly: Most tests now return nil instead of a value.
Sanity.ly: Most tests now return nil instead of a value.

Most of them never needed to return a value anyway. The parser doesn't add an
implicit o_return_noval for nil methods (yet), so the explicit return is still
needed.

crasm/lily,boardwalk/lily,crasm/lily,boardwalk/lily,crasm/lily