Changelog
[f7308ab] minor #144 improve return types phpdocs (@IonBazan)
[097c995] feature #146 add Stringable interface (@IonBazan)
[e8e3c73] feature #145 Add Doctrine ODM bridge (@IonBazan)
[c533ec1] minor #147 Don't always require mongodb for tests (@ogizanagi)
