DDC-2850: Allow cascaded clearing of Entities associated to the indicated Entity

[doctrinebot]

Jira issue originally created by user holtkamp:

As described here, it would be nice to have associated Entities be cleared in case required and configured in such way. It seems the functionality is available already, but always disabled (noCascade => TRUE).
A secondary optional boolean parameter to the function would do:

https://github.com/doctrine/doctrine2/blob/master/lib/Doctrine/ORM/UnitOfWork.php#L2342

public function clean($entityName = null, $noCascade = true)

https://github.com/doctrine/doctrine2/blob/master/lib/Doctrine/ORM/UnitOfWork.php#L2369

$this->doDetach($entity, $visited, $noCascade);

[doctrinebot]

Comment created by holtkamp:

PR: #995
Auto-created issue: http://www.doctrine-project.org/jira/browse/[DDC-3060](http://www.doctrine-project.org/jira/browse/DDC-3060)

[doctrinebot]

Comment created by @doctrinebot:

A related Github Pull-Request [GH-995] was closed:
#995

[doctrinebot]

Comment created by @guilhermeblanco:

As of 1cd0b26 this issue is now fixed.

[doctrinebot]

Issue was closed with resolution "Fixed"