Merge branch '4.4'

Author: Tobion

Cloner/AbstractCloner.php

@@ -76,6 +76,7 @@ abstract class AbstractCloner implements ClonerInterface
         'Exception' => ['Symfony\Component\VarDumper\Caster\ExceptionCaster', 'castException'],
         'Error' => ['Symfony\Component\VarDumper\Caster\ExceptionCaster', 'castError'],
         'Symfony\Component\DependencyInjection\ContainerInterface' => ['Symfony\Component\VarDumper\Caster\StubCaster', 'cutInternals'],
+        'Symfony\Component\EventDispatcher\EventDispatcherInterface' => ['Symfony\Component\VarDumper\Caster\StubCaster', 'cutInternals'],
         'Symfony\Component\HttpClient\CurlHttpClient' => ['Symfony\Component\VarDumper\Caster\SymfonyCaster', 'castHttpClient'],
         'Symfony\Component\HttpClient\NativeHttpClient' => ['Symfony\Component\VarDumper\Caster\SymfonyCaster', 'castHttpClient'],
         'Symfony\Component\HttpClient\Response\CurlResponse' => ['Symfony\Component\VarDumper\Caster\SymfonyCaster', 'castHttpClientResponse'],