Use ContainerAwareEventDispatcher to lazy-load subscribers
Update deps
Add dev-dependency for whatthejeff/fab
Fix lock file for fab-phpunit-resultprinter
Merge branch 'master' into container-dispatcher

* master:
  Fix lock file for fab-phpunit-resultprinter
  Add dev-dependency for whatthejeff/fab
  Update deps
Add integration test for EventSubscriberPass
Merge branch 'container-dispatcher'

* container-dispatcher:
  Add integration test for EventSubscriberPass
  Use ContainerAwareEventDispatcher to lazy-load subscribers
Merge branch 'master' into config

* master:
  Add integration test for EventSubscriberPass
  Fix lock file for fab-phpunit-resultprinter
  Add dev-dependency for whatthejeff/fab
  Update deps
  Use ContainerAwareEventDispatcher to lazy-load subscribers
Remove unused use statement
Improve EventSubscriberPassTest to ensure lazy listener creation
Merge branch 'master' into config

* master:
  Improve EventSubscriberPassTest to ensure lazy listener creation
  Remove unused use statement
Allow for a global yml-based config file
Use config component to provide config validation and merging
Fix test to use yolo.debug
Extract base extension class which provides root node