I just installed 0.4.0 (🎉), and a call to `read_gbq` with no `verbose` argument still complained at me. I realized the issue is because pandas [still provides a default](https://github.com/pandas-dev/pandas/blob/6d610a4d9393c0d0335267dc3252ccabb9e51e43/pandas/io/gbq.py#L25). WAI? (/cc @tswast)