Tests are not run for MySQL?
No they are not run for MySQL because there are some failures that I do not intend to fix. MySQL is supported, and most things work, but it is not tested as part of the continuous integration.

Tests are only run for SQLite and PostgreSQL at the moment. Is there any particular reason the suite is not run against MySQL? After all `peewee` claims to support MySQL in the README and documentation.

See [.travis.yml](https://github.com/coleifer/peewee/blob/65bf15f93f2f96abf8b216e6eea056726711a19f/.travis.yml#L8-L10)

Cheers,
Paul
