incompatible with doctrine/orm >= 2.12.0

[BigMichi1]

today we updated all dependencies to the latest versions by running composer update and faced an issue that broke the application.

we could track it down to the doctrine/orm dependency that was upgraded from 2.11.2 to 2.12.0.

the issue here is that in https://github.com/doctrine/DoctrineModule/blame/5.1.x/src/Service/DriverFactory.php#L75-L76 the check uses the "old deprecated" classes which are now abstract. for 2.12.0 AnnotationDriver should be used from Doctrine\ORM\Mapping\Driver instead of Doctrine\Persistence\Mapping\Driver.

currently it does not pass the check and goes to the else and tries in our case to create an instance of Doctrine\Persistence\Mapping\Driver\AnnotationDriver by passing the path as the first param where an instance of a Reader is expected and later fails with

 Specifying the paths to your entities is required when using Doctrine\ORM\Mapping\Driver\AnnotationDriver to retrieve all class names.

when paths are checked

[ppaulis]

I can try to prepare a fix for this. Is it supposed to support both drivers, as long as the deprecated one exists? Or is the new one sufficiant?

[ppaulis]

The PR makes it compatible to the new version of the AnnotationDriver, but no longer the old one. If compatibility for both is still needed, just let me know :-)

[driehle]

Fixed with release of ORM 2.12.1, added conflict in #778