Force installation of latest version of DoctrineORMModule 0.8

SpiffyUser not presently compatible with 0.7.x as it calls `DoctrineModule\Authentication\Adapter\ObjectRepository::getOptions`, which was not ([added until 0.8.0-beta1](https://github.com/doctrine/DoctrineModule/commit/b8242ef8316951b9048781b4ef3a7c6ee78503c9))