Reduce priority for Doctrine event subscriber

[xkons]

This way I can be sure that objects that are to be translated are actually ready.

[coveralls]

Coverage decreased (-1.06%) to 84.615% when pulling 5d037a9 on add_event_subscriber_service_priority into f227c8b on master.

[mpdude]

The use case is that if you have additional life cycle event listeners set up in Doctrine that initialize fields marked as translatable, we want Polyglot to handle these fields (injecting the value holders) somewhat later.

In result, it should be possible to use Polyglot also for fields not managed directly by Doctrine, but by additional extensions depending on the postLoad event.

[mpdude]

@xkons Fine!

Could you please add a short changelog entry as well ("changed priority ... to -100... to defer injection of translation objects..." or similar), and then merge this and create a release tag? I think this qualifies as a bugfix.

Thanks!

[coveralls]

Coverage decreased (-0.02%) to 84.599% when pulling a56dfcf on add_event_subscriber_service_priority into 6df74af on master.