Kanboard requires at least PHP 5.6 now

21 files changed, 564 insertions, 488 deletions

diff --git a/vendor/symfony/event-dispatcher/CHANGELOG.md b/vendor/symfony/event-dispatcher/CHANGELOG.md
index bb42ee19..c6aa5389 100644
--- a/vendor/symfony/event-dispatcher/CHANGELOG.md
+++ b/vendor/symfony/event-dispatcher/CHANGELOG.md
@@ -1,6 +1,25 @@
 CHANGELOG
 =========
 
+3.4.0
+-----
+
+  * Implementing `TraceableEventDispatcherInterface` without the `reset()` method has been deprecated.
+
+3.3.0
+-----
+
+  * The ContainerAwareEventDispatcher class has been deprecated. Use EventDispatcher with closure factories instead.
+
+3.0.0
+-----
+
+  * The method `getListenerPriority($eventName, $listener)` has been added to the
+    `EventDispatcherInterface`.
+  * The methods `Event::setDispatcher()`, `Event::getDispatcher()`, `Event::setName()`
+    and `Event::getName()` have been removed.
+    The event dispatcher and the event name are passed to the listener call.
+
 2.5.0
 -----
 
diff --git a/vendor/symfony/event-dispatcher/ContainerAwareEventDispatcher.php b/vendor/symfony/event-dispatcher/ContainerAwareEventDispatcher.php
index b92defe6..7a2b68be 100644
--- a/vendor/symfony/event-dispatcher/ContainerAwareEventDispatcher.php
+++ b/vendor/symfony/event-dispatcher/ContainerAwareEventDispatcher.php
@@ -20,38 +20,34 @@ use Symfony\Component\DependencyInjection\ContainerInterface;
  * @author Fabien Potencier <fabien@symfony.com>
  * @author Bernhard Schussek <bschussek@gmail.com>
  * @author Jordan Alliot <jordan.alliot@gmail.com>
+ *
+ * @deprecated since 3.3, to be removed in 4.0. Use EventDispatcher with closure factories instead.
  */
 class ContainerAwareEventDispatcher extends EventDispatcher
 {
-    /**
-     * The container from where services are loaded.
-     *
-     * @var ContainerInterface
-     */
     private $container;
 
     /**
      * The service IDs of the event listeners and subscribers.
-     *
-     * @var array
      */
     private $listenerIds = array();
 
     /**
      * The services registered as listeners.
-     *
-     * @var array
      */
     private $listeners = array();
 
-    /**
-     * Constructor.
-     *
-     * @param ContainerInterface $container A ContainerInterface instance
-     */
     public function __construct(ContainerInterface $container)
     {
         $this->container = $container;
+
+        $class = get_class($this);
+        if ($this instanceof \PHPUnit_Framework_MockObject_MockObject || $this instanceof \Prophecy\Doubler\DoubleInterface) {
+            $class = get_parent_class($class);
+        }
+        if (__CLASS__ !== $class) {
+            @trigger_error(sprintf('The %s class is deprecated since version 3.3 and will be removed in 4.0. Use EventDispatcher with closure factories instead.', __CLASS__), E_USER_DEPRECATED);
+        }
     }
 
     /**
@@ -68,6 +64,8 @@ class ContainerAwareEventDispatcher extends EventDispatcher
      */
     public function addListenerService($eventName, $callback, $priority = 0)
     {
+        @trigger_error(sprintf('The %s class is deprecated since version 3.3 and will be removed in 4.0. Use EventDispatcher with closure factories instead.', __CLASS__), E_USER_DEPRECATED);
+
         if (!is_array($callback) || 2 !== count($callback)) {
             throw new \InvalidArgumentException('Expected an array("service", "method") argument');
         }
@@ -80,8 +78,7 @@ class ContainerAwareEventDispatcher extends EventDispatcher
         $this->lazyLoad($eventName);
 
         if (isset($this->listenerIds[$eventName])) {
-            foreach ($this->listenerIds[$eventName] as $i => $args) {
-                list($serviceId, $method, $priority) = $args;
+            foreach ($this->listenerIds[$eventName] as $i => list($serviceId, $method)) {
                 $key = $serviceId.'.'.$method;
                 if (isset($this->listeners[$eventName][$key]) && $listener === array($this->listeners[$eventName][$key], $method)) {
                     unset($this->listeners[$eventName][$key]);
@@ -105,7 +102,7 @@ class ContainerAwareEventDispatcher extends EventDispatcher
     public function hasListeners($eventName = null)
     {
         if (null === $eventName) {
-            return (bool) count($this->listenerIds) || (bool) count($this->listeners);
+            return $this->listenerIds || $this->listeners || parent::hasListeners();
         }
 
         if (isset($this->listenerIds[$eventName])) {
@@ -132,6 +129,16 @@ class ContainerAwareEventDispatcher extends EventDispatcher
     }
 
     /**
+     * {@inheritdoc}
+     */
+    public function getListenerPriority($eventName, $listener)
+    {
+        $this->lazyLoad($eventName);
+
+        return parent::getListenerPriority($eventName, $listener);
+    }
+
+    /**
      * Adds a service as event subscriber.
      *
      * @param string $serviceId The service ID of the subscriber service
@@ -139,6 +146,8 @@ class ContainerAwareEventDispatcher extends EventDispatcher
      */
     public function addSubscriberService($serviceId, $class)
     {
+        @trigger_error(sprintf('The %s class is deprecated since version 3.3 and will be removed in 4.0. Use EventDispatcher with closure factories instead.', __CLASS__), E_USER_DEPRECATED);
+
         foreach ($class::getSubscribedEvents() as $eventName => $params) {
             if (is_string($params)) {
                 $this->listenerIds[$eventName][] = array($serviceId, $params, 0);
@@ -154,6 +163,8 @@ class ContainerAwareEventDispatcher extends EventDispatcher
 
     public function getContainer()
     {
+        @trigger_error('The '.__METHOD__.'() method is deprecated since version 3.3 as its class will be removed in 4.0. Inject the container or the services you need in your listeners/subscribers instead.', E_USER_DEPRECATED);
+
         return $this->container;
     }
 
@@ -168,14 +179,13 @@ class ContainerAwareEventDispatcher extends EventDispatcher
     protected function lazyLoad($eventName)
     {
         if (isset($this->listenerIds[$eventName])) {
-            foreach ($this->listenerIds[$eventName] as $args) {
-                list($serviceId, $method, $priority) = $args;
+            foreach ($this->listenerIds[$eventName] as list($serviceId, $method, $priority)) {
                 $listener = $this->container->get($serviceId);
 
                 $key = $serviceId.'.'.$method;
                 if (!isset($this->listeners[$eventName][$key])) {
                     $this->addListener($eventName, array($listener, $method), $priority);
-                } elseif ($listener !== $this->listeners[$eventName][$key]) {
+                } elseif ($this->listeners[$eventName][$key] !== $listener) {
                     parent::removeListener($eventName, array($this->listeners[$eventName][$key], $method));
                     $this->addListener($eventName, array($listener, $method), $priority);
                 }
diff --git a/vendor/symfony/event-dispatcher/Debug/TraceableEventDispatcher.php b/vendor/symfony/event-dispatcher/Debug/TraceableEventDispatcher.php
index 12e2b1c6..9b5c689a 100644
--- a/vendor/symfony/event-dispatcher/Debug/TraceableEventDispatcher.php
+++ b/vendor/symfony/event-dispatcher/Debug/TraceableEventDispatcher.php
@@ -33,13 +33,6 @@ class TraceableEventDispatcher implements TraceableEventDispatcherInterface
     private $dispatcher;
     private $wrappedListeners;
 
-    /**
-     * Constructor.
-     *
-     * @param EventDispatcherInterface $dispatcher An EventDispatcherInterface instance
-     * @param Stopwatch                $stopwatch  A Stopwatch instance
-     * @param LoggerInterface          $logger     A LoggerInterface instance
-     */
     public function __construct(EventDispatcherInterface $dispatcher, Stopwatch $stopwatch, LoggerInterface $logger = null)
     {
         $this->dispatcher = $dispatcher;
@@ -102,6 +95,24 @@ class TraceableEventDispatcher implements TraceableEventDispatcherInterface
     /**
      * {@inheritdoc}
      */
+    public function getListenerPriority($eventName, $listener)
+    {
+        // we might have wrapped listeners for the event (if called while dispatching)
+        // in that case get the priority by wrapper
+        if (isset($this->wrappedListeners[$eventName])) {
+            foreach ($this->wrappedListeners[$eventName] as $index => $wrappedListener) {
+                if ($wrappedListener->getWrappedListener() === $listener) {
+                    return $this->dispatcher->getListenerPriority($eventName, $wrappedListener);
+                }
+            }
+        }
+
+        return $this->dispatcher->getListenerPriority($eventName, $listener);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
     public function hasListeners($eventName = null)
     {
         return $this->dispatcher->hasListeners($eventName);
@@ -145,8 +156,7 @@ class TraceableEventDispatcher implements TraceableEventDispatcherInterface
         $called = array();
         foreach ($this->called as $eventName => $listeners) {
             foreach ($listeners as $listener) {
-                $info = $this->getListenerInfo($listener->getWrappedListener(), $eventName);
-                $called[$eventName.'.'.$info['pretty']] = $info;
+                $called[$eventName.'.'.$listener->getPretty()] = $listener->getInfo($eventName);
             }
         }
 
@@ -184,15 +194,24 @@ class TraceableEventDispatcher implements TraceableEventDispatcherInterface
                 }
 
                 if (!$called) {
-                    $info = $this->getListenerInfo($listener, $eventName);
-                    $notCalled[$eventName.'.'.$info['pretty']] = $info;
+                    if (!$listener instanceof WrappedListener) {
+                        $listener = new WrappedListener($listener, null, $this->stopwatch, $this);
+                    }
+                    $notCalled[$eventName.'.'.$listener->getPretty()] = $listener->getInfo($eventName);
                 }
             }
         }
 
+        uasort($notCalled, array($this, 'sortListenersByPriority'));
+
         return $notCalled;
     }
 
+    public function reset()
+    {
+        $this->called = array();
+    }
+
     /**
      * Proxies all method calls to the original event dispatcher.
      *
@@ -229,12 +248,11 @@ class TraceableEventDispatcher implements TraceableEventDispatcherInterface
     private function preProcess($eventName)
     {
         foreach ($this->dispatcher->getListeners($eventName) as $listener) {
-            $this->dispatcher->removeListener($eventName, $listener);
-            $info = $this->getListenerInfo($listener, $eventName);
-            $name = isset($info['class']) ? $info['class'] : $info['type'];
-            $wrappedListener = new WrappedListener($listener, $name, $this->stopwatch, $this);
+            $priority = $this->getListenerPriority($eventName, $listener);
+            $wrappedListener = new WrappedListener($listener, null, $this->stopwatch, $this);
             $this->wrappedListeners[$eventName][] = $wrappedListener;
-            $this->dispatcher->addListener($eventName, $wrappedListener);
+            $this->dispatcher->removeListener($eventName, $listener);
+            $this->dispatcher->addListener($eventName, $wrappedListener, $priority);
         }
     }
 
@@ -247,13 +265,17 @@ class TraceableEventDispatcher implements TraceableEventDispatcherInterface
                 continue;
             }
             // Unwrap listener
+            $priority = $this->getListenerPriority($eventName, $listener);
             $this->dispatcher->removeListener($eventName, $listener);
-            $this->dispatcher->addListener($eventName, $listener->getWrappedListener());
+            $this->dispatcher->addListener($eventName, $listener->getWrappedListener(), $priority);
+
+            if (null !== $this->logger) {
+                $context = array('event' => $eventName, 'listener' => $listener->getPretty());
+            }
 
-            $info = $this->getListenerInfo($listener->getWrappedListener(), $eventName);
             if ($listener->wasCalled()) {
                 if (null !== $this->logger) {
-                    $this->logger->debug(sprintf('Notified event "%s" to listener "%s".', $eventName, $info['pretty']));
+                    $this->logger->debug('Notified event "{event}" to listener "{listener}".', $context);
                 }
 
                 if (!isset($this->called[$eventName])) {
@@ -264,12 +286,12 @@ class TraceableEventDispatcher implements TraceableEventDispatcherInterface
             }
 
             if (null !== $this->logger && $skipped) {
-                $this->logger->debug(sprintf('Listener "%s" was not called for event "%s".', $info['pretty'], $eventName));
+                $this->logger->debug('Listener "{listener}" was not called for event "{event}".', $context);
             }
 
             if ($listener->stoppedPropagation()) {
                 if (null !== $this->logger) {
-                    $this->logger->debug(sprintf('Listener "%s" stopped propagation of the event "%s".', $info['pretty'], $eventName));
+                    $this->logger->debug('Listener "{listener}" stopped propagation of the event "{event}".', $context);
                 }
 
                 $skipped = true;
@@ -277,63 +299,24 @@ class TraceableEventDispatcher implements TraceableEventDispatcherInterface
         }
     }
 
-    /**
-     * Returns information about the listener.
-     *
-     * @param object $listener  The listener
-     * @param string $eventName The event name
-     *
-     * @return array Information about the listener
-     */
-    private function getListenerInfo($listener, $eventName)
+    private function sortListenersByPriority($a, $b)
     {
-        $info = array(
-            'event' => $eventName,
-        );
-        if ($listener instanceof \Closure) {
-            $info += array(
-                'type' => 'Closure',
-                'pretty' => 'closure',
-            );
-        } elseif (is_string($listener)) {
-            try {
-                $r = new \ReflectionFunction($listener);
-                $file = $r->getFileName();
-                $line = $r->getStartLine();
-            } catch (\ReflectionException $e) {
-                $file = null;
-                $line = null;
-            }
-            $info += array(
-                'type' => 'Function',
-                'function' => $listener,
-                'file' => $file,
-                'line' => $line,
-                'pretty' => $listener,
-            );
-        } elseif (is_array($listener) || (is_object($listener) && is_callable($listener))) {
-            if (!is_array($listener)) {
-                $listener = array($listener, '__invoke');
-            }
-            $class = is_object($listener[0]) ? get_class($listener[0]) : $listener[0];
-            try {
-                $r = new \ReflectionMethod($class, $listener[1]);
-                $file = $r->getFileName();
-                $line = $r->getStartLine();
-            } catch (\ReflectionException $e) {
-                $file = null;
-                $line = null;
-            }
-            $info += array(
-                'type' => 'Method',
-                'class' => $class,
-                'method' => $listener[1],
-                'file' => $file,
-                'line' => $line,
-                'pretty' => $class.'::'.$listener[1],
-            );
+        if (is_int($a['priority']) && !is_int($b['priority'])) {
+            return 1;
+        }
+
+        if (!is_int($a['priority']) && is_int($b['priority'])) {
+            return -1;
+        }
+
+        if ($a['priority'] === $b['priority']) {
+            return 0;
+        }
+
+        if ($a['priority'] > $b['priority']) {
+            return -1;
         }
 
-        return $info;
+        return 1;
     }
 }
diff --git a/vendor/symfony/event-dispatcher/Debug/TraceableEventDispatcherInterface.php b/vendor/symfony/event-dispatcher/Debug/TraceableEventDispatcherInterface.php
index 5483e815..f0212753 100644
--- a/vendor/symfony/event-dispatcher/Debug/TraceableEventDispatcherInterface.php
+++ b/vendor/symfony/event-dispatcher/Debug/TraceableEventDispatcherInterface.php
@@ -15,6 +15,8 @@ use Symfony\Component\EventDispatcher\EventDispatcherInterface;
 
 /**
  * @author Fabien Potencier <fabien@symfony.com>
+ *
+ * @method reset() Resets the trace.
  */
 interface TraceableEventDispatcherInterface extends EventDispatcherInterface
 {
diff --git a/vendor/symfony/event-dispatcher/Debug/WrappedListener.php b/vendor/symfony/event-dispatcher/Debug/WrappedListener.php
index e16627d6..f7b0273e 100644
--- a/vendor/symfony/event-dispatcher/Debug/WrappedListener.php
+++ b/vendor/symfony/event-dispatcher/Debug/WrappedListener.php
@@ -14,6 +14,7 @@ namespace Symfony\Component\EventDispatcher\Debug;
 use Symfony\Component\Stopwatch\Stopwatch;
 use Symfony\Component\EventDispatcher\Event;
 use Symfony\Component\EventDispatcher\EventDispatcherInterface;
+use Symfony\Component\VarDumper\Caster\ClassStub;
 
 /**
  * @author Fabien Potencier <fabien@symfony.com>
@@ -26,6 +27,9 @@ class WrappedListener
     private $stoppedPropagation;
     private $stopwatch;
     private $dispatcher;
+    private $pretty;
+    private $stub;
+    private static $hasClassStub;
 
     public function __construct($listener, $name, Stopwatch $stopwatch, EventDispatcherInterface $dispatcher = null)
     {
@@ -35,6 +39,26 @@ class WrappedListener
         $this->dispatcher = $dispatcher;
         $this->called = false;
         $this->stoppedPropagation = false;
+
+        if (is_array($listener)) {
+            $this->name = is_object($listener[0]) ? get_class($listener[0]) : $listener[0];
+            $this->pretty = $this->name.'::'.$listener[1];
+        } elseif ($listener instanceof \Closure) {
+            $this->pretty = $this->name = 'closure';
+        } elseif (is_string($listener)) {
+            $this->pretty = $this->name = $listener;
+        } else {
+            $this->name = get_class($listener);
+            $this->pretty = $this->name.'::__invoke';
+        }
+
+        if (null !== $name) {
+            $this->name = $name;
+        }
+
+        if (null === self::$hasClassStub) {
+            self::$hasClassStub = class_exists(ClassStub::class);
+        }
     }
 
     public function getWrappedListener()
@@ -52,6 +76,25 @@ class WrappedListener
         return $this->stoppedPropagation;
     }
 
+    public function getPretty()
+    {
+        return $this->pretty;
+    }
+
+    public function getInfo($eventName)
+    {
+        if (null === $this->stub) {
+            $this->stub = self::$hasClassStub ? new ClassStub($this->pretty.'()', $this->listener) : $this->pretty.'()';
+        }
+
+        return array(
+            'event' => $eventName,
+            'priority' => null !== $this->dispatcher ? $this->dispatcher->getListenerPriority($eventName, $this->listener) : null,
+            'pretty' => $this->pretty,
+            'stub' => $this->stub,
+        );
+    }
+
     public function __invoke(Event $event, $eventName, EventDispatcherInterface $dispatcher)
     {
         $this->called = true;
diff --git a/vendor/symfony/event-dispatcher/DependencyInjection/RegisterListenersPass.php b/vendor/symfony/event-dispatcher/DependencyInjection/RegisterListenersPass.php
index ebfe435f..9f9c09c5 100644
--- a/vendor/symfony/event-dispatcher/DependencyInjection/RegisterListenersPass.php
+++ b/vendor/symfony/event-dispatcher/DependencyInjection/RegisterListenersPass.php
@@ -11,32 +11,27 @@
 
 namespace Symfony\Component\EventDispatcher\DependencyInjection;
 
+use Symfony\Component\DependencyInjection\Argument\ServiceClosureArgument;
 use Symfony\Component\DependencyInjection\ContainerBuilder;
 use Symfony\Component\DependencyInjection\Compiler\CompilerPassInterface;
+use Symfony\Component\DependencyInjection\Exception\InvalidArgumentException;
+use Symfony\Component\DependencyInjection\Reference;
+use Symfony\Component\EventDispatcher\EventDispatcher;
+use Symfony\Component\EventDispatcher\EventSubscriberInterface;
 
 /**
  * Compiler pass to register tagged services for an event dispatcher.
  */
 class RegisterListenersPass implements CompilerPassInterface
 {
-    /**
-     * @var string
-     */
     protected $dispatcherService;
-
-    /**
-     * @var string
-     */
     protected $listenerTag;
-
-    /**
-     * @var string
-     */
     protected $subscriberTag;
 
+    private $hotPathEvents = array();
+    private $hotPathTagName;
+
     /**
-     * Constructor.
-     *
      * @param string $dispatcherService Service name of the event dispatcher in processed container
      * @param string $listenerTag       Tag name used for listener
      * @param string $subscriberTag     Tag name used for subscribers
@@ -48,6 +43,14 @@ class RegisterListenersPass implements CompilerPassInterface
         $this->subscriberTag = $subscriberTag;
     }
 
+    public function setHotPathEvents(array $hotPathEvents, $tagName = 'container.hot_path')
+    {
+        $this->hotPathEvents = array_flip($hotPathEvents);
+        $this->hotPathTagName = $tagName;
+
+        return $this;
+    }
+
     public function process(ContainerBuilder $container)
     {
         if (!$container->hasDefinition($this->dispatcherService) && !$container->hasAlias($this->dispatcherService)) {
@@ -56,21 +59,12 @@ class RegisterListenersPass implements CompilerPassInterface
 
         $definition = $container->findDefinition($this->dispatcherService);
 
-        foreach ($container->findTaggedServiceIds($this->listenerTag) as $id => $events) {
-            $def = $container->getDefinition($id);
-            if (!$def->isPublic()) {
-                throw new \InvalidArgumentException(sprintf('The service "%s" must be public as event listeners are lazy-loaded.', $id));
-            }
-
-            if ($def->isAbstract()) {
-                throw new \InvalidArgumentException(sprintf('The service "%s" must not be abstract as event listeners are lazy-loaded.', $id));
-            }
-
+        foreach ($container->findTaggedServiceIds($this->listenerTag, true) as $id => $events) {
             foreach ($events as $event) {
                 $priority = isset($event['priority']) ? $event['priority'] : 0;
 
                 if (!isset($event['event'])) {
-                    throw new \InvalidArgumentException(sprintf('Service "%s" must define the "event" attribute on "%s" tags.', $id, $this->listenerTag));
+                    throw new InvalidArgumentException(sprintf('Service "%s" must define the "event" attribute on "%s" tags.', $id, $this->listenerTag));
                 }
 
                 if (!isset($event['method'])) {
@@ -81,29 +75,65 @@ class RegisterListenersPass implements CompilerPassInterface
                     $event['method'] = preg_replace('/[^a-z0-9]/i', '', $event['method']);
                 }
 
-                $definition->addMethodCall('addListenerService', array($event['event'], array($id, $event['method']), $priority));
+                $definition->addMethodCall('addListener', array($event['event'], array(new ServiceClosureArgument(new Reference($id)), $event['method']), $priority));
+
+                if (isset($this->hotPathEvents[$event['event']])) {
+                    $container->getDefinition($id)->addTag($this->hotPathTagName);
+                }
             }
         }
 
-        foreach ($container->findTaggedServiceIds($this->subscriberTag) as $id => $attributes) {
-            $def = $container->getDefinition($id);
-            if (!$def->isPublic()) {
-                throw new \InvalidArgumentException(sprintf('The service "%s" must be public as event subscribers are lazy-loaded.', $id));
-            }
+        $extractingDispatcher = new ExtractingEventDispatcher();
 
-            if ($def->isAbstract()) {
-                throw new \InvalidArgumentException(sprintf('The service "%s" must not be abstract as event subscribers are lazy-loaded.', $id));
-            }
+        foreach ($container->findTaggedServiceIds($this->subscriberTag, true) as $id => $attributes) {
+            $def = $container->getDefinition($id);
 
             // We must assume that the class value has been correctly filled, even if the service is created by a factory
             $class = $container->getParameterBag()->resolveValue($def->getClass());
-
             $interface = 'Symfony\Component\EventDispatcher\EventSubscriberInterface';
+
             if (!is_subclass_of($class, $interface)) {
-                throw new \InvalidArgumentException(sprintf('Service "%s" must implement interface "%s".', $id, $interface));
+                if (!class_exists($class, false)) {
+                    throw new InvalidArgumentException(sprintf('Class "%s" used for service "%s" cannot be found.', $class, $id));
+                }
+
+                throw new InvalidArgumentException(sprintf('Service "%s" must implement interface "%s".', $id, $interface));
             }
+            $container->addObjectResource($class);
 
-            $definition->addMethodCall('addSubscriberService', array($id, $class));
+            ExtractingEventDispatcher::$subscriber = $class;
+            $extractingDispatcher->addSubscriber($extractingDispatcher);
+            foreach ($extractingDispatcher->listeners as $args) {
+                $args[1] = array(new ServiceClosureArgument(new Reference($id)), $args[1]);
+                $definition->addMethodCall('addListener', $args);
+
+                if (isset($this->hotPathEvents[$args[0]])) {
+                    $container->getDefinition($id)->addTag('container.hot_path');
+                }
+            }
+            $extractingDispatcher->listeners = array();
         }
     }
 }
+
+/**
+ * @internal
+ */
+class ExtractingEventDispatcher extends EventDispatcher implements EventSubscriberInterface
+{
+    public $listeners = array();
+
+    public static $subscriber;
+
+    public function addListener($eventName, $listener, $priority = 0)
+    {
+        $this->listeners[] = array($eventName, $listener[1], $priority);
+    }
+
+    public static function getSubscribedEvents()
+    {
+        $callback = array(self::$subscriber, 'getSubscribedEvents');
+
+        return $callback();
+    }
+}
diff --git a/vendor/symfony/event-dispatcher/Event.php b/vendor/symfony/event-dispatcher/Event.php
index 4a563495..9c56b2f5 100644
--- a/vendor/symfony/event-dispatcher/Event.php
+++ b/vendor/symfony/event-dispatcher/Event.php
@@ -33,21 +33,11 @@ class Event
     private $propagationStopped = false;
 
     /**
-     * @var EventDispatcher Dispatcher that dispatched this event
-     */
-    private $dispatcher;
-
-    /**
-     * @var string This event's name
-     */
-    private $name;
-
-    /**
      * Returns whether further event listeners should be triggered.
      *
      * @see Event::stopPropagation()
      *
-     * @return bool Whether propagation was already stopped for this event.
+     * @return bool Whether propagation was already stopped for this event
      */
     public function isPropagationStopped()
     {
@@ -65,56 +55,4 @@ class Event
     {
         $this->propagationStopped = true;
     }
-
-    /**
-     * Stores the EventDispatcher that dispatches this Event.
-     *
-     * @param EventDispatcherInterface $dispatcher
-     *
-     * @deprecated since version 2.4, to be removed in 3.0. The event dispatcher is passed to the listener call.
-     */
-    public function setDispatcher(EventDispatcherInterface $dispatcher)
-    {
-        $this->dispatcher = $dispatcher;
-    }
-
-    /**
-     * Returns the EventDispatcher that dispatches this Event.
-     *
-     * @return EventDispatcherInterface
-     *
-     * @deprecated since version 2.4, to be removed in 3.0. The event dispatcher is passed to the listener call.
-     */
-    public function getDispatcher()
-    {
-        @trigger_error('The '.__METHOD__.' method is deprecated since version 2.4 and will be removed in 3.0. The event dispatcher instance can be received in the listener call instead.', E_USER_DEPRECATED);
-
-        return $this->dispatcher;
-    }
-
-    /**
-     * Gets the event's name.
-     *
-     * @return string
-     *
-     * @deprecated since version 2.4, to be removed in 3.0. The event name is passed to the listener call.
-     */
-    public function getName()
-    {
-        @trigger_error('The '.__METHOD__.' method is deprecated since version 2.4 and will be removed in 3.0. The event name can be received in the listener call instead.', E_USER_DEPRECATED);
-
-        return $this->name;
-    }
-
-    /**
-     * Sets the event's name property.
-     *
-     * @param string $name The event name.
-     *
-     * @deprecated since version 2.4, to be removed in 3.0. The event name is passed to the listener call.
-     */
-    public function setName($name)
-    {
-        $this->name = $name;
-    }
 }
diff --git a/vendor/symfony/event-dispatcher/EventDispatcher.php b/vendor/symfony/event-dispatcher/EventDispatcher.php
index f1b63f70..bc79a958 100644
--- a/vendor/symfony/event-dispatcher/EventDispatcher.php
+++ b/vendor/symfony/event-dispatcher/EventDispatcher.php
@@ -24,6 +24,7 @@ namespace Symfony\Component\EventDispatcher;
  * @author Fabien Potencier <fabien@symfony.com>
  * @author Jordi Boggiano <j.boggiano@seld.be>
  * @author Jordan Alliot <jordan.alliot@gmail.com>
+ * @author Nicolas Grekas <p@tchwork.com>
  */
 class EventDispatcher implements EventDispatcherInterface
 {
@@ -39,9 +40,6 @@ class EventDispatcher implements EventDispatcherInterface
             $event = new Event();
         }
 
-        $event->setDispatcher($this);
-        $event->setName($eventName);
-
         if ($listeners = $this->getListeners($eventName)) {
             $this->doDispatch($listeners, $eventName, $event);
         }
@@ -55,7 +53,7 @@ class EventDispatcher implements EventDispatcherInterface
     public function getListeners($eventName = null)
     {
         if (null !== $eventName) {
-            if (!isset($this->listeners[$eventName])) {
+            if (empty($this->listeners[$eventName])) {
                 return array();
             }
 
@@ -78,9 +76,45 @@ class EventDispatcher implements EventDispatcherInterface
     /**
      * {@inheritdoc}
      */
+    public function getListenerPriority($eventName, $listener)
+    {
+        if (empty($this->listeners[$eventName])) {
+            return;
+        }
+
+        if (is_array($listener) && isset($listener[0]) && $listener[0] instanceof \Closure) {
+            $listener[0] = $listener[0]();
+        }
+
+        foreach ($this->listeners[$eventName] as $priority => $listeners) {
+            foreach ($listeners as $k => $v) {
+                if ($v !== $listener && is_array($v) && isset($v[0]) && $v[0] instanceof \Closure) {
+                    $v[0] = $v[0]();
+                    $this->listeners[$eventName][$priority][$k] = $v;
+                }
+                if ($v === $listener) {
+                    return $priority;
+                }
+            }
+        }
+    }
+
+    /**
+     * {@inheritdoc}
+     */
     public function hasListeners($eventName = null)
     {
-        return (bool) count($this->getListeners($eventName));
+        if (null !== $eventName) {
+            return !empty($this->listeners[$eventName]);
+        }
+
+        foreach ($this->listeners as $eventListeners) {
+            if ($eventListeners) {
+                return true;
+            }
+        }
+
+        return false;
     }
 
     /**
@@ -97,13 +131,30 @@ class EventDispatcher implements EventDispatcherInterface
      */
     public function removeListener($eventName, $listener)
     {
-        if (!isset($this->listeners[$eventName])) {
+        if (empty($this->listeners[$eventName])) {
             return;
         }
 
+        if (is_array($listener) && isset($listener[0]) && $listener[0] instanceof \Closure) {
+            $listener[0] = $listener[0]();
+        }
+
         foreach ($this->listeners[$eventName] as $priority => $listeners) {
-            if (false !== ($key = array_search($listener, $listeners, true))) {
-                unset($this->listeners[$eventName][$priority][$key], $this->sorted[$eventName]);
+            foreach ($listeners as $k => $v) {
+                if ($v !== $listener && is_array($v) && isset($v[0]) && $v[0] instanceof \Closure) {
+                    $v[0] = $v[0]();
+                }
+                if ($v === $listener) {
+                    unset($listeners[$k], $this->sorted[$eventName]);
+                } else {
+                    $listeners[$k] = $v;
+                }
+            }
+
+            if ($listeners) {
+                $this->listeners[$eventName][$priority] = $listeners;
+            } else {
+                unset($this->listeners[$eventName][$priority]);
             }
         }
     }
@@ -148,9 +199,9 @@ class EventDispatcher implements EventDispatcherInterface
      * This method can be overridden to add functionality that is executed
      * for each listener.
      *
-     * @param callable[] $listeners The event listeners.
-     * @param string     $eventName The name of the event to dispatch.
-     * @param Event      $event     The event object to pass to the event handlers/listeners.
+     * @param callable[] $listeners The event listeners
+     * @param string     $eventName The name of the event to dispatch
+     * @param Event      $event     The event object to pass to the event handlers/listeners
      */
     protected function doDispatch($listeners, $eventName, Event $event)
     {
@@ -158,20 +209,28 @@ class EventDispatcher implements EventDispatcherInterface
             if ($event->isPropagationStopped()) {
                 break;
             }
-            call_user_func($listener, $event, $eventName, $this);
+            \call_user_func($listener, $event, $eventName, $this);
         }
     }
 
     /**
      * Sorts the internal list of listeners for the given event by priority.
      *
-     * @param string $eventName The name of the event.
+     * @param string $eventName The name of the event
      */
     private function sortListeners($eventName)
     {
+        krsort($this->listeners[$eventName]);
         $this->sorted[$eventName] = array();
 
-        krsort($this->listeners[$eventName]);
-        $this->sorted[$eventName] = call_user_func_array('array_merge', $this->listeners[$eventName]);
+        foreach ($this->listeners[$eventName] as $priority => $listeners) {
+            foreach ($listeners as $k => $listener) {
+                if (\is_array($listener) && isset($listener[0]) && $listener[0] instanceof \Closure) {
+                    $listener[0] = $listener[0]();
+                    $this->listeners[$eventName][$priority][$k] = $listener;
+                }
+                $this->sorted[$eventName][] = $listener;
+            }
+        }
     }
 }
diff --git a/vendor/symfony/event-dispatcher/EventDispatcherInterface.php b/vendor/symfony/event-dispatcher/EventDispatcherInterface.php
index a9bdd2c8..d3d0cb8a 100644
--- a/vendor/symfony/event-dispatcher/EventDispatcherInterface.php
+++ b/vendor/symfony/event-dispatcher/EventDispatcherInterface.php
@@ -26,8 +26,8 @@ interface EventDispatcherInterface
      * @param string $eventName The name of the event to dispatch. The name of
      *                          the event is the name of the method that is
      *                          invoked on listeners.
-     * @param Event  $event     The event to pass to the event handlers/listeners.
-     *                          If not supplied, an empty Event instance is created.
+     * @param Event  $event     The event to pass to the event handlers/listeners
+     *                          If not supplied, an empty Event instance is created
      *
      * @return Event
      */
@@ -48,8 +48,6 @@ interface EventDispatcherInterface
      *
      * The subscriber is asked for all the events he is
      * interested in and added as a listener for these events.
-     *
-     * @param EventSubscriberInterface $subscriber The subscriber.
      */
     public function addSubscriber(EventSubscriberInterface $subscriber);
 
@@ -61,11 +59,6 @@ interface EventDispatcherInterface
      */
     public function removeListener($eventName, $listener);
 
-    /**
-     * Removes an event subscriber.
-     *
-     * @param EventSubscriberInterface $subscriber The subscriber
-     */
     public function removeSubscriber(EventSubscriberInterface $subscriber);
 
     /**
@@ -78,6 +71,18 @@ interface EventDispatcherInterface
     public function getListeners($eventName = null);
 
     /**
+     * Gets the listener priority for a specific event.
+     *
+     * Returns null if the event or the listener does not exist.
+     *
+     * @param string   $eventName The name of the event
+     * @param callable $listener  The listener
+     *
+     * @return int|null The event listener priority
+     */
+    public function getListenerPriority($eventName, $listener);
+
+    /**
      * Checks whether an event has any registered listeners.
      *
      * @param string $eventName The name of the event
diff --git a/vendor/symfony/event-dispatcher/GenericEvent.php b/vendor/symfony/event-dispatcher/GenericEvent.php
index 03cbcfe3..95c99408 100644
--- a/vendor/symfony/event-dispatcher/GenericEvent.php
+++ b/vendor/symfony/event-dispatcher/GenericEvent.php
@@ -20,25 +20,14 @@ namespace Symfony\Component\EventDispatcher;
  */
 class GenericEvent extends Event implements \ArrayAccess, \IteratorAggregate
 {
-    /**
-     * Event subject.
-     *
-     * @var mixed usually object or callable
-     */
     protected $subject;
-
-    /**
-     * Array of arguments.
-     *
-     * @var array
-     */
     protected $arguments;
 
     /**
      * Encapsulate an event with $subject and $args.
      *
-     * @param mixed $subject   The subject of the event, usually an object.
-     * @param array $arguments Arguments to store in the event.
+     * @param mixed $subject   The subject of the event, usually an object or a callable
+     * @param array $arguments Arguments to store in the event
      */
     public function __construct($subject = null, array $arguments = array())
     {
@@ -49,7 +38,7 @@ class GenericEvent extends Event implements \ArrayAccess, \IteratorAggregate
     /**
      * Getter for subject property.
      *
-     * @return mixed $subject The observer subject.
+     * @return mixed $subject The observer subject
      */
     public function getSubject()
     {
@@ -59,11 +48,11 @@ class GenericEvent extends Event implements \ArrayAccess, \IteratorAggregate
     /**
      * Get argument by key.
      *
-     * @param string $key Key.
+     * @param string $key Key
      *
-     * @return mixed Contents of array key.
+     * @return mixed Contents of array key
      *
-     * @throws \InvalidArgumentException If key is not found.
+     * @throws \InvalidArgumentException if key is not found
      */
     public function getArgument($key)
     {
@@ -77,10 +66,10 @@ class GenericEvent extends Event implements \ArrayAccess, \IteratorAggregate
     /**
      * Add argument to event.
      *
-     * @param string $key   Argument name.
-     * @param mixed  $value Value.
+     * @param string $key   Argument name
+     * @param mixed  $value Value
      *
-     * @return GenericEvent
+     * @return $this
      */
     public function setArgument($key, $value)
     {
@@ -102,9 +91,9 @@ class GenericEvent extends Event implements \ArrayAccess, \IteratorAggregate
     /**
      * Set args property.
      *
-     * @param array $args Arguments.
+     * @param array $args Arguments
      *
-     * @return GenericEvent
+     * @return $this
      */
     public function setArguments(array $args = array())
     {
@@ -116,7 +105,7 @@ class GenericEvent extends Event implements \ArrayAccess, \IteratorAggregate
     /**
      * Has argument.
      *
-     * @param string $key Key of arguments array.
+     * @param string $key Key of arguments array
      *
      * @return bool
      */
@@ -128,11 +117,11 @@ class GenericEvent extends Event implements \ArrayAccess, \IteratorAggregate
     /**
      * ArrayAccess for argument getter.
      *
-     * @param string $key Array key.
+     * @param string $key Array key
      *
      * @return mixed
      *
-     * @throws \InvalidArgumentException If key does not exist in $this->args.
+     * @throws \InvalidArgumentException if key does not exist in $this->args
      */
     public function offsetGet($key)
     {
@@ -142,8 +131,8 @@ class GenericEvent extends Event implements \ArrayAccess, \IteratorAggregate
     /**
      * ArrayAccess for argument setter.
      *
-     * @param string $key   Array key to set.
-     * @param mixed  $value Value.
+     * @param string $key   Array key to set
+     * @param mixed  $value Value
      */
     public function offsetSet($key, $value)
     {
@@ -153,7 +142,7 @@ class GenericEvent extends Event implements \ArrayAccess, \IteratorAggregate
     /**
      * ArrayAccess for unset argument.
      *
-     * @param string $key Array key.
+     * @param string $key Array key
      */
     public function offsetUnset($key)
     {
@@ -165,7 +154,7 @@ class GenericEvent extends Event implements \ArrayAccess, \IteratorAggregate
     /**
      * ArrayAccess has argument.
      *
-     * @param string $key Array key.
+     * @param string $key Array key
      *
      * @return bool
      */
diff --git a/vendor/symfony/event-dispatcher/ImmutableEventDispatcher.php b/vendor/symfony/event-dispatcher/ImmutableEventDispatcher.php
index 7ef9ece7..b3cf56c5 100644
--- a/vendor/symfony/event-dispatcher/ImmutableEventDispatcher.php
+++ b/vendor/symfony/event-dispatcher/ImmutableEventDispatcher.php
@@ -18,18 +18,8 @@ namespace Symfony\Component\EventDispatcher;
  */
 class ImmutableEventDispatcher implements EventDispatcherInterface
 {
-    /**
-     * The proxied dispatcher.
-     *
-     * @var EventDispatcherInterface
-     */
     private $dispatcher;
 
-    /**
-     * Creates an unmodifiable proxy for an event dispatcher.
-     *
-     * @param EventDispatcherInterface $dispatcher The proxied event dispatcher.
-     */
     public function __construct(EventDispatcherInterface $dispatcher)
     {
         $this->dispatcher = $dispatcher;
@@ -86,6 +76,14 @@ class ImmutableEventDispatcher implements EventDispatcherInterface
     /**
      * {@inheritdoc}
      */
+    public function getListenerPriority($eventName, $listener)
+    {
+        return $this->dispatcher->getListenerPriority($eventName, $listener);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
     public function hasListeners($eventName = null)
     {
         return $this->dispatcher->hasListeners($eventName);
diff --git a/vendor/symfony/event-dispatcher/LICENSE b/vendor/symfony/event-dispatcher/LICENSE
index 12a74531..17d16a13 100644
--- a/vendor/symfony/event-dispatcher/LICENSE
+++ b/vendor/symfony/event-dispatcher/LICENSE
@@ -1,4 +1,4 @@
-Copyright (c) 2004-2016 Fabien Potencier
+Copyright (c) 2004-2017 Fabien Potencier
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
diff --git a/vendor/symfony/event-dispatcher/Tests/AbstractEventDispatcherTest.php b/vendor/symfony/event-dispatcher/Tests/AbstractEventDispatcherTest.php
index 2e4c3fd9..9443f216 100644
--- a/vendor/symfony/event-dispatcher/Tests/AbstractEventDispatcherTest.php
+++ b/vendor/symfony/event-dispatcher/Tests/AbstractEventDispatcherTest.php
@@ -11,11 +11,12 @@
 
 namespace Symfony\Component\EventDispatcher\Tests;
 
+use PHPUnit\Framework\TestCase;
 use Symfony\Component\EventDispatcher\Event;
 use Symfony\Component\EventDispatcher\EventDispatcher;
 use Symfony\Component\EventDispatcher\EventSubscriberInterface;
 
-abstract class AbstractEventDispatcherTest extends \PHPUnit_Framework_TestCase
+abstract class AbstractEventDispatcherTest extends TestCase
 {
     /* Some pseudo events */
     const preFoo = 'pre.foo';
@@ -55,6 +56,7 @@ abstract class AbstractEventDispatcherTest extends \PHPUnit_Framework_TestCase
     {
         $this->dispatcher->addListener('pre.foo', array($this->listener, 'preFoo'));
         $this->dispatcher->addListener('post.foo', array($this->listener, 'postFoo'));
+        $this->assertTrue($this->dispatcher->hasListeners());
         $this->assertTrue($this->dispatcher->hasListeners(self::preFoo));
         $this->assertTrue($this->dispatcher->hasListeners(self::postFoo));
         $this->assertCount(1, $this->dispatcher->getListeners(self::preFoo));
@@ -108,6 +110,20 @@ abstract class AbstractEventDispatcherTest extends \PHPUnit_Framework_TestCase
         $this->assertSame($expected, $this->dispatcher->getListeners());
     }
 
+    public function testGetListenerPriority()
+    {
+        $listener1 = new TestEventListener();
+        $listener2 = new TestEventListener();
+
+        $this->dispatcher->addListener('pre.foo', $listener1, -10);
+        $this->dispatcher->addListener('pre.foo', $listener2);
+
+        $this->assertSame(-10, $this->dispatcher->getListenerPriority('pre.foo', $listener1));
+        $this->assertSame(0, $this->dispatcher->getListenerPriority('pre.foo', $listener2));
+        $this->assertNull($this->dispatcher->getListenerPriority('pre.bar', $listener2));
+        $this->assertNull($this->dispatcher->getListenerPriority('pre.foo', function () {}));
+    }
+
     public function testDispatch()
     {
         $this->dispatcher->addListener('pre.foo', array($this->listener, 'preFoo'));
@@ -122,16 +138,6 @@ abstract class AbstractEventDispatcherTest extends \PHPUnit_Framework_TestCase
         $this->assertSame($event, $return);
     }
 
-    /**
-     * @group legacy
-     */
-    public function testLegacyDispatch()
-    {
-        $event = new Event();
-        $return = $this->dispatcher->dispatch(self::preFoo, $event);
-        $this->assertEquals('pre.foo', $event->getName());
-    }
-
     public function testDispatchForClosure()
     {
         $invoked = 0;
@@ -249,19 +255,6 @@ abstract class AbstractEventDispatcherTest extends \PHPUnit_Framework_TestCase
         $this->assertFalse($this->dispatcher->hasListeners(self::preFoo));
     }
 
-    /**
-     * @group legacy
-     */
-    public function testLegacyEventReceivesTheDispatcherInstance()
-    {
-        $dispatcher = null;
-        $this->dispatcher->addListener('test', function ($event) use (&$dispatcher) {
-            $dispatcher = $event->getDispatcher();
-        });
-        $this->dispatcher->dispatch('test');
-        $this->assertSame($this->dispatcher, $dispatcher);
-    }
-
     public function testEventReceivesTheDispatcherInstanceAsArgument()
     {
         $listener = new TestWithDispatcher();
@@ -310,6 +303,73 @@ abstract class AbstractEventDispatcherTest extends \PHPUnit_Framework_TestCase
         $this->assertFalse($this->dispatcher->hasListeners('foo'));
         $this->assertFalse($this->dispatcher->hasListeners());
     }
+
+    public function testHasListenersIsLazy()
+    {
+        $called = 0;
+        $listener = array(function () use (&$called) { ++$called; }, 'onFoo');
+        $this->dispatcher->addListener('foo', $listener);
+        $this->assertTrue($this->dispatcher->hasListeners());
+        $this->assertTrue($this->dispatcher->hasListeners('foo'));
+        $this->assertSame(0, $called);
+    }
+
+    public function testDispatchLazyListener()
+    {
+        $called = 0;
+        $factory = function () use (&$called) {
+            ++$called;
+
+            return new TestWithDispatcher();
+        };
+        $this->dispatcher->addListener('foo', array($factory, 'foo'));
+        $this->assertSame(0, $called);
+        $this->dispatcher->dispatch('foo', new Event());
+        $this->dispatcher->dispatch('foo', new Event());
+        $this->assertSame(1, $called);
+    }
+
+    public function testRemoveFindsLazyListeners()
+    {
+        $test = new TestWithDispatcher();
+        $factory = function () use ($test) { return $test; };
+
+        $this->dispatcher->addListener('foo', array($factory, 'foo'));
+        $this->assertTrue($this->dispatcher->hasListeners('foo'));
+        $this->dispatcher->removeListener('foo', array($test, 'foo'));
+        $this->assertFalse($this->dispatcher->hasListeners('foo'));
+
+        $this->dispatcher->addListener('foo', array($test, 'foo'));
+        $this->assertTrue($this->dispatcher->hasListeners('foo'));
+        $this->dispatcher->removeListener('foo', array($factory, 'foo'));
+        $this->assertFalse($this->dispatcher->hasListeners('foo'));
+    }
+
+    public function testPriorityFindsLazyListeners()
+    {
+        $test = new TestWithDispatcher();
+        $factory = function () use ($test) { return $test; };
+
+        $this->dispatcher->addListener('foo', array($factory, 'foo'), 3);
+        $this->assertSame(3, $this->dispatcher->getListenerPriority('foo', array($test, 'foo')));
+        $this->dispatcher->removeListener('foo', array($factory, 'foo'));
+
+        $this->dispatcher->addListener('foo', array($test, 'foo'), 5);
+        $this->assertSame(5, $this->dispatcher->getListenerPriority('foo', array($factory, 'foo')));
+    }
+
+    public function testGetLazyListeners()
+    {
+        $test = new TestWithDispatcher();
+        $factory = function () use ($test) { return $test; };
+
+        $this->dispatcher->addListener('foo', array($factory, 'foo'), 3);
+        $this->assertSame(array(array($test, 'foo')), $this->dispatcher->getListeners('foo'));
+
+        $this->dispatcher->removeListener('foo', array($test, 'foo'));
+        $this->dispatcher->addListener('bar', array($factory, 'foo'), 3);
+        $this->assertSame(array('bar' => array(array($test, 'foo'))), $this->dispatcher->getListeners());
+    }
 }
 
 class CallableClass
diff --git a/vendor/symfony/event-dispatcher/Tests/ContainerAwareEventDispatcherTest.php b/vendor/symfony/event-dispatcher/Tests/ContainerAwareEventDispatcherTest.php
index 0f3f5ba7..9d5eecc5 100644
--- a/vendor/symfony/event-dispatcher/Tests/ContainerAwareEventDispatcherTest.php
+++ b/vendor/symfony/event-dispatcher/Tests/ContainerAwareEventDispatcherTest.php
@@ -12,11 +12,13 @@
 namespace Symfony\Component\EventDispatcher\Tests;
 
 use Symfony\Component\DependencyInjection\Container;
-use Symfony\Component\DependencyInjection\Scope;
 use Symfony\Component\EventDispatcher\ContainerAwareEventDispatcher;
 use Symfony\Component\EventDispatcher\Event;
 use Symfony\Component\EventDispatcher\EventSubscriberInterface;
 
+/**
+ * @group legacy
+ */
 class ContainerAwareEventDispatcherTest extends AbstractEventDispatcherTest
 {
     protected function createEventDispatcher()
@@ -30,7 +32,7 @@ class ContainerAwareEventDispatcherTest extends AbstractEventDispatcherTest
     {
         $event = new Event();
 
-        $service = $this->getMock('Symfony\Component\EventDispatcher\Tests\Service');
+        $service = $this->getMockBuilder('Symfony\Component\EventDispatcher\Tests\Service')->getMock();
 
         $service
             ->expects($this->once())
@@ -51,7 +53,7 @@ class ContainerAwareEventDispatcherTest extends AbstractEventDispatcherTest
     {
         $event = new Event();
 
-        $service = $this->getMock('Symfony\Component\EventDispatcher\Tests\SubscriberService');
+        $service = $this->getMockBuilder('Symfony\Component\EventDispatcher\Tests\SubscriberService')->getMock();
 
         $service
             ->expects($this->once())
@@ -86,7 +88,7 @@ class ContainerAwareEventDispatcherTest extends AbstractEventDispatcherTest
     {
         $event = new Event();
 
-        $service = $this->getMock('Symfony\Component\EventDispatcher\Tests\Service');
+        $service = $this->getMockBuilder('Symfony\Component\EventDispatcher\Tests\Service')->getMock();
 
         $service
             ->expects($this->once())
@@ -104,73 +106,11 @@ class ContainerAwareEventDispatcherTest extends AbstractEventDispatcherTest
         $dispatcher->dispatch('onEvent', $event);
     }
 
-    /**
-     * @expectedException \InvalidArgumentException
-     */
-    public function testTriggerAListenerServiceOutOfScope()
-    {
-        $service = $this->getMock('Symfony\Component\EventDispatcher\Tests\Service');
-
-        $scope = new Scope('scope');
-        $container = new Container();
-        $container->addScope($scope);
-        $container->enterScope('scope');
-
-        $container->set('service.listener', $service, 'scope');
-
-        $dispatcher = new ContainerAwareEventDispatcher($container);
-        $dispatcher->addListenerService('onEvent', array('service.listener', 'onEvent'));
-
-        $container->leaveScope('scope');
-        $dispatcher->dispatch('onEvent');
-    }
-
-    public function testReEnteringAScope()
-    {
-        $event = new Event();
-
-        $service1 = $this->getMock('Symfony\Component\EventDispatcher\Tests\Service');
-
-        $service1
-            ->expects($this->exactly(2))
-            ->method('onEvent')
-            ->with($event)
-        ;
-
-        $scope = new Scope('scope');
-        $container = new Container();
-        $container->addScope($scope);
-        $container->enterScope('scope');
-
-        $container->set('service.listener', $service1, 'scope');
-
-        $dispatcher = new ContainerAwareEventDispatcher($container);
-        $dispatcher->addListenerService('onEvent', array('service.listener', 'onEvent'));
-        $dispatcher->dispatch('onEvent', $event);
-
-        $service2 = $this->getMock('Symfony\Component\EventDispatcher\Tests\Service');
-
-        $service2
-            ->expects($this->once())
-            ->method('onEvent')
-            ->with($event)
-        ;
-
-        $container->enterScope('scope');
-        $container->set('service.listener', $service2, 'scope');
-
-        $dispatcher->dispatch('onEvent', $event);
-
-        $container->leaveScope('scope');
-
-        $dispatcher->dispatch('onEvent');
-    }
-
     public function testHasListenersOnLazyLoad()
     {
         $event = new Event();
 
-        $service = $this->getMock('Symfony\Component\EventDispatcher\Tests\Service');
+        $service = $this->getMockBuilder('Symfony\Component\EventDispatcher\Tests\Service')->getMock();
 
         $container = new Container();
         $container->set('service.listener', $service);
@@ -178,9 +118,6 @@ class ContainerAwareEventDispatcherTest extends AbstractEventDispatcherTest
         $dispatcher = new ContainerAwareEventDispatcher($container);
         $dispatcher->addListenerService('onEvent', array('service.listener', 'onEvent'));
 
-        $event->setDispatcher($dispatcher);
-        $event->setName('onEvent');
-
         $service
             ->expects($this->once())
             ->method('onEvent')
@@ -196,7 +133,7 @@ class ContainerAwareEventDispatcherTest extends AbstractEventDispatcherTest
 
     public function testGetListenersOnLazyLoad()
     {
-        $service = $this->getMock('Symfony\Component\EventDispatcher\Tests\Service');
+        $service = $this->getMockBuilder('Symfony\Component\EventDispatcher\Tests\Service')->getMock();
 
         $container = new Container();
         $container->set('service.listener', $service);
@@ -206,14 +143,14 @@ class ContainerAwareEventDispatcherTest extends AbstractEventDispatcherTest
 
         $listeners = $dispatcher->getListeners();
 
-        $this->assertTrue(isset($listeners['onEvent']));
+        $this->assertArrayHasKey('onEvent', $listeners);
 
         $this->assertCount(1, $dispatcher->getListeners('onEvent'));
     }
 
     public function testRemoveAfterDispatch()
     {
-        $service = $this->getMock('Symfony\Component\EventDispatcher\Tests\Service');
+        $service = $this->getMockBuilder('Symfony\Component\EventDispatcher\Tests\Service')->getMock();
 
         $container = new Container();
         $container->set('service.listener', $service);
@@ -228,7 +165,7 @@ class ContainerAwareEventDispatcherTest extends AbstractEventDispatcherTest
 
     public function testRemoveBeforeDispatch()
     {
-        $service = $this->getMock('Symfony\Component\EventDispatcher\Tests\Service');
+        $service = $this->getMockBuilder('Symfony\Component\EventDispatcher\Tests\Service')->getMock();
 
         $container = new Container();
         $container->set('service.listener', $service);
diff --git a/vendor/symfony/event-dispatcher/Tests/Debug/TraceableEventDispatcherTest.php b/vendor/symfony/event-dispatcher/Tests/Debug/TraceableEventDispatcherTest.php
index 4aa6226e..53a3421a 100644
--- a/vendor/symfony/event-dispatcher/Tests/Debug/TraceableEventDispatcherTest.php
+++ b/vendor/symfony/event-dispatcher/Tests/Debug/TraceableEventDispatcherTest.php
@@ -11,6 +11,7 @@
 
 namespace Symfony\Component\EventDispatcher\Tests\Debug;
 
+use PHPUnit\Framework\TestCase;
 use Symfony\Component\EventDispatcher\Debug\TraceableEventDispatcher;
 use Symfony\Component\EventDispatcher\EventDispatcherInterface;
 use Symfony\Component\EventDispatcher\EventSubscriberInterface;
@@ -18,14 +19,14 @@ use Symfony\Component\EventDispatcher\EventDispatcher;
 use Symfony\Component\EventDispatcher\Event;
 use Symfony\Component\Stopwatch\Stopwatch;
 
-class TraceableEventDispatcherTest extends \PHPUnit_Framework_TestCase
+class TraceableEventDispatcherTest extends TestCase
 {
     public function testAddRemoveListener()
     {
         $dispatcher = new EventDispatcher();
         $tdispatcher = new TraceableEventDispatcher($dispatcher, new Stopwatch());
 
-        $tdispatcher->addListener('foo', $listener = function () {; });
+        $tdispatcher->addListener('foo', $listener = function () {});
         $listeners = $dispatcher->getListeners('foo');
         $this->assertCount(1, $listeners);
         $this->assertSame($listener, $listeners[0]);
@@ -39,7 +40,7 @@ class TraceableEventDispatcherTest extends \PHPUnit_Framework_TestCase
         $dispatcher = new EventDispatcher();
         $tdispatcher = new TraceableEventDispatcher($dispatcher, new Stopwatch());
 
-        $tdispatcher->addListener('foo', $listener = function () {; });
+        $tdispatcher->addListener('foo', $listener = function () {});
         $this->assertSame($dispatcher->getListeners('foo'), $tdispatcher->getListeners('foo'));
     }
 
@@ -51,11 +52,42 @@ class TraceableEventDispatcherTest extends \PHPUnit_Framework_TestCase
         $this->assertFalse($dispatcher->hasListeners('foo'));
         $this->assertFalse($tdispatcher->hasListeners('foo'));
 
-        $tdispatcher->addListener('foo', $listener = function () {; });
+        $tdispatcher->addListener('foo', $listener = function () {});
         $this->assertTrue($dispatcher->hasListeners('foo'));
         $this->assertTrue($tdispatcher->hasListeners('foo'));
     }
 
+    public function testGetListenerPriority()
+    {
+        $dispatcher = new EventDispatcher();
+        $tdispatcher = new TraceableEventDispatcher($dispatcher, new Stopwatch());
+
+        $tdispatcher->addListener('foo', function () {}, 123);
+
+        $listeners = $dispatcher->getListeners('foo');
+        $this->assertSame(123, $tdispatcher->getListenerPriority('foo', $listeners[0]));
+
+        // Verify that priority is preserved when listener is removed and re-added
+        // in preProcess() and postProcess().
+        $tdispatcher->dispatch('foo', new Event());
+        $listeners = $dispatcher->getListeners('foo');
+        $this->assertSame(123, $tdispatcher->getListenerPriority('foo', $listeners[0]));
+    }
+
+    public function testGetListenerPriorityWhileDispatching()
+    {
+        $tdispatcher = new TraceableEventDispatcher(new EventDispatcher(), new Stopwatch());
+        $priorityWhileDispatching = null;
+
+        $listener = function () use ($tdispatcher, &$priorityWhileDispatching, &$listener) {
+            $priorityWhileDispatching = $tdispatcher->getListenerPriority('bar', $listener);
+        };
+
+        $tdispatcher->addListener('bar', $listener, 5);
+        $tdispatcher->dispatch('bar');
+        $this->assertSame(5, $priorityWhileDispatching);
+    }
+
     public function testAddRemoveSubscriber()
     {
         $dispatcher = new EventDispatcher();
@@ -74,19 +106,39 @@ class TraceableEventDispatcherTest extends \PHPUnit_Framework_TestCase
 
     public function testGetCalledListeners()
     {
-        $dispatcher = new EventDispatcher();
-        $tdispatcher = new TraceableEventDispatcher($dispatcher, new Stopwatch());
-        $tdispatcher->addListener('foo', $listener = function () {; });
+        $tdispatcher = new TraceableEventDispatcher(new EventDispatcher(), new Stopwatch());
+        $tdispatcher->addListener('foo', function () {}, 5);
 
+        $listeners = $tdispatcher->getNotCalledListeners();
+        $this->assertArrayHasKey('stub', $listeners['foo.closure']);
+        unset($listeners['foo.closure']['stub']);
         $this->assertEquals(array(), $tdispatcher->getCalledListeners());
-        $this->assertEquals(array('foo.closure' => array('event' => 'foo', 'type' => 'Closure', 'pretty' => 'closure')), $tdispatcher->getNotCalledListeners());
+        $this->assertEquals(array('foo.closure' => array('event' => 'foo', 'pretty' => 'closure', 'priority' => 5)), $listeners);
 
         $tdispatcher->dispatch('foo');
 
-        $this->assertEquals(array('foo.closure' => array('event' => 'foo', 'type' => 'Closure', 'pretty' => 'closure')), $tdispatcher->getCalledListeners());
+        $listeners = $tdispatcher->getCalledListeners();
+        $this->assertArrayHasKey('stub', $listeners['foo.closure']);
+        unset($listeners['foo.closure']['stub']);
+        $this->assertEquals(array('foo.closure' => array('event' => 'foo', 'pretty' => 'closure', 'priority' => 5)), $listeners);
         $this->assertEquals(array(), $tdispatcher->getNotCalledListeners());
     }
 
+    public function testClearCalledListeners()
+    {
+        $tdispatcher = new TraceableEventDispatcher(new EventDispatcher(), new Stopwatch());
+        $tdispatcher->addListener('foo', function () {}, 5);
+
+        $tdispatcher->dispatch('foo');
+        $tdispatcher->reset();
+
+        $listeners = $tdispatcher->getNotCalledListeners();
+        $this->assertArrayHasKey('stub', $listeners['foo.closure']);
+        unset($listeners['foo.closure']['stub']);
+        $this->assertEquals(array(), $tdispatcher->getCalledListeners());
+        $this->assertEquals(array('foo.closure' => array('event' => 'foo', 'pretty' => 'closure', 'priority' => 5)), $listeners);
+    }
+
     public function testGetCalledListenersNested()
     {
         $tdispatcher = null;
@@ -103,31 +155,31 @@ class TraceableEventDispatcherTest extends \PHPUnit_Framework_TestCase
 
     public function testLogger()
     {
-        $logger = $this->getMock('Psr\Log\LoggerInterface');
+        $logger = $this->getMockBuilder('Psr\Log\LoggerInterface')->getMock();
 
         $dispatcher = new EventDispatcher();
         $tdispatcher = new TraceableEventDispatcher($dispatcher, new Stopwatch(), $logger);
-        $tdispatcher->addListener('foo', $listener1 = function () {; });
-        $tdispatcher->addListener('foo', $listener2 = function () {; });
+        $tdispatcher->addListener('foo', $listener1 = function () {});
+        $tdispatcher->addListener('foo', $listener2 = function () {});
 
-        $logger->expects($this->at(0))->method('debug')->with('Notified event "foo" to listener "closure".');
-        $logger->expects($this->at(1))->method('debug')->with('Notified event "foo" to listener "closure".');
+        $logger->expects($this->at(0))->method('debug')->with('Notified event "{event}" to listener "{listener}".', array('event' => 'foo', 'listener' => 'closure'));
+        $logger->expects($this->at(1))->method('debug')->with('Notified event "{event}" to listener "{listener}".', array('event' => 'foo', 'listener' => 'closure'));
 
         $tdispatcher->dispatch('foo');
     }
 
     public function testLoggerWithStoppedEvent()
     {
-        $logger = $this->getMock('Psr\Log\LoggerInterface');
+        $logger = $this->getMockBuilder('Psr\Log\LoggerInterface')->getMock();
 
         $dispatcher = new EventDispatcher();
         $tdispatcher = new TraceableEventDispatcher($dispatcher, new Stopwatch(), $logger);
         $tdispatcher->addListener('foo', $listener1 = function (Event $event) { $event->stopPropagation(); });
-        $tdispatcher->addListener('foo', $listener2 = function () {; });
+        $tdispatcher->addListener('foo', $listener2 = function () {});
 
-        $logger->expects($this->at(0))->method('debug')->with('Notified event "foo" to listener "closure".');
-        $logger->expects($this->at(1))->method('debug')->with('Listener "closure" stopped propagation of the event "foo".');
-        $logger->expects($this->at(2))->method('debug')->with('Listener "closure" was not called for event "foo".');
+        $logger->expects($this->at(0))->method('debug')->with('Notified event "{event}" to listener "{listener}".', array('event' => 'foo', 'listener' => 'closure'));
+        $logger->expects($this->at(1))->method('debug')->with('Listener "{listener}" stopped propagation of the event "{event}".', array('event' => 'foo', 'listener' => 'closure'));
+        $logger->expects($this->at(2))->method('debug')->with('Listener "{listener}" was not called for event "{event}".', array('event' => 'foo', 'listener' => 'closure'));
 
         $tdispatcher->dispatch('foo');
     }
@@ -138,26 +190,32 @@ class TraceableEventDispatcherTest extends \PHPUnit_Framework_TestCase
 
         $dispatcher = new EventDispatcher();
         $tdispatcher = new TraceableEventDispatcher($dispatcher, new Stopwatch());
-        $tdispatcher->addListener('foo', $listener1 = function () use (&$called) { $called[] = 'foo1'; });
-        $tdispatcher->addListener('foo', $listener2 = function () use (&$called) { $called[] = 'foo2'; });
+        $tdispatcher->addListener('foo', function () use (&$called) { $called[] = 'foo1'; }, 10);
+        $tdispatcher->addListener('foo', function () use (&$called) { $called[] = 'foo2'; }, 20);
 
         $tdispatcher->dispatch('foo');
 
-        $this->assertEquals(array('foo1', 'foo2'), $called);
+        $this->assertSame(array('foo2', 'foo1'), $called);
     }
 
     public function testDispatchNested()
     {
         $dispatcher = new TraceableEventDispatcher(new EventDispatcher(), new Stopwatch());
         $loop = 1;
+        $dispatchedEvents = 0;
         $dispatcher->addListener('foo', $listener1 = function () use ($dispatcher, &$loop) {
             ++$loop;
             if (2 == $loop) {
                 $dispatcher->dispatch('foo');
             }
         });
+        $dispatcher->addListener('foo', function () use (&$dispatchedEvents) {
+            ++$dispatchedEvents;
+        });
 
         $dispatcher->dispatch('foo');
+
+        $this->assertSame(2, $dispatchedEvents);
     }
 
     public function testDispatchReusedEventNested()
diff --git a/vendor/symfony/event-dispatcher/Tests/DependencyInjection/RegisterListenersPassTest.php b/vendor/symfony/event-dispatcher/Tests/DependencyInjection/RegisterListenersPassTest.php
index 0fdd6372..dbb1aa5c 100644
--- a/vendor/symfony/event-dispatcher/Tests/DependencyInjection/RegisterListenersPassTest.php
+++ b/vendor/symfony/event-dispatcher/Tests/DependencyInjection/RegisterListenersPassTest.php
@@ -11,10 +11,13 @@
 
 namespace Symfony\Component\EventDispatcher\Tests\DependencyInjection;
 
+use PHPUnit\Framework\TestCase;
+use Symfony\Component\DependencyInjection\Argument\ServiceClosureArgument;
 use Symfony\Component\DependencyInjection\ContainerBuilder;
+use Symfony\Component\DependencyInjection\Reference;
 use Symfony\Component\EventDispatcher\DependencyInjection\RegisterListenersPass;
 
-class RegisterListenersPassTest extends \PHPUnit_Framework_TestCase
+class RegisterListenersPassTest extends TestCase
 {
     /**
      * Tests that event subscribers not implementing EventSubscriberInterface
@@ -29,18 +32,12 @@ class RegisterListenersPassTest extends \PHPUnit_Framework_TestCase
             'my_event_subscriber' => array(0 => array()),
         );
 
-        $definition = $this->getMock('Symfony\Component\DependencyInjection\Definition');
-        $definition->expects($this->atLeastOnce())
-            ->method('isPublic')
-            ->will($this->returnValue(true));
+        $definition = $this->getMockBuilder('Symfony\Component\DependencyInjection\Definition')->getMock();
         $definition->expects($this->atLeastOnce())
             ->method('getClass')
             ->will($this->returnValue('stdClass'));
 
-        $builder = $this->getMock(
-            'Symfony\Component\DependencyInjection\ContainerBuilder',
-            array('hasDefinition', 'findTaggedServiceIds', 'getDefinition')
-        );
+        $builder = $this->getMockBuilder('Symfony\Component\DependencyInjection\ContainerBuilder')->setMethods(array('hasDefinition', 'findTaggedServiceIds', 'getDefinition'))->getMock();
         $builder->expects($this->any())
             ->method('hasDefinition')
             ->will($this->returnValue(true));
@@ -64,18 +61,12 @@ class RegisterListenersPassTest extends \PHPUnit_Framework_TestCase
             'my_event_subscriber' => array(0 => array()),
         );
 
-        $definition = $this->getMock('Symfony\Component\DependencyInjection\Definition');
-        $definition->expects($this->atLeastOnce())
-            ->method('isPublic')
-            ->will($this->returnValue(true));
+        $definition = $this->getMockBuilder('Symfony\Component\DependencyInjection\Definition')->getMock();
         $definition->expects($this->atLeastOnce())
             ->method('getClass')
             ->will($this->returnValue('Symfony\Component\EventDispatcher\Tests\DependencyInjection\SubscriberService'));
 
-        $builder = $this->getMock(
-            'Symfony\Component\DependencyInjection\ContainerBuilder',
-            array('hasDefinition', 'findTaggedServiceIds', 'getDefinition', 'findDefinition')
-        );
+        $builder = $this->getMockBuilder('Symfony\Component\DependencyInjection\ContainerBuilder')->setMethods(array('hasDefinition', 'findTaggedServiceIds', 'getDefinition', 'findDefinition'))->getMock();
         $builder->expects($this->any())
             ->method('hasDefinition')
             ->will($this->returnValue(true));
@@ -99,35 +90,7 @@ class RegisterListenersPassTest extends \PHPUnit_Framework_TestCase
 
     /**
      * @expectedException \InvalidArgumentException
-     * @expectedExceptionMessage The service "foo" must be public as event listeners are lazy-loaded.
-     */
-    public function testPrivateEventListener()
-    {
-        $container = new ContainerBuilder();
-        $container->register('foo', 'stdClass')->setPublic(false)->addTag('kernel.event_listener', array());
-        $container->register('event_dispatcher', 'stdClass');
-
-        $registerListenersPass = new RegisterListenersPass();
-        $registerListenersPass->process($container);
-    }
-
-    /**
-     * @expectedException \InvalidArgumentException
-     * @expectedExceptionMessage The service "foo" must be public as event subscribers are lazy-loaded.
-     */
-    public function testPrivateEventSubscriber()
-    {
-        $container = new ContainerBuilder();
-        $container->register('foo', 'stdClass')->setPublic(false)->addTag('kernel.event_subscriber', array());
-        $container->register('event_dispatcher', 'stdClass');
-
-        $registerListenersPass = new RegisterListenersPass();
-        $registerListenersPass->process($container);
-    }
-
-    /**
-     * @expectedException \InvalidArgumentException
-     * @expectedExceptionMessage The service "foo" must not be abstract as event listeners are lazy-loaded.
+     * @expectedExceptionMessage The service "foo" tagged "kernel.event_listener" must not be abstract.
      */
     public function testAbstractEventListener()
     {
@@ -141,7 +104,7 @@ class RegisterListenersPassTest extends \PHPUnit_Framework_TestCase
 
     /**
      * @expectedException \InvalidArgumentException
-     * @expectedExceptionMessage The service "foo" must not be abstract as event subscribers are lazy-loaded.
+     * @expectedExceptionMessage The service "foo" tagged "kernel.event_subscriber" must not be abstract.
      */
     public function testAbstractEventSubscriber()
     {
@@ -165,16 +128,29 @@ class RegisterListenersPassTest extends \PHPUnit_Framework_TestCase
         $registerListenersPass->process($container);
 
         $definition = $container->getDefinition('event_dispatcher');
-        $expected_calls = array(
+        $expectedCalls = array(
             array(
-                'addSubscriberService',
+                'addListener',
                 array(
-                    'foo',
-                    'Symfony\Component\EventDispatcher\Tests\DependencyInjection\SubscriberService',
+                    'event',
+                    array(new ServiceClosureArgument(new Reference('foo')), 'onEvent'),
+                    0,
                 ),
             ),
         );
-        $this->assertSame($expected_calls, $definition->getMethodCalls());
+        $this->assertEquals($expectedCalls, $definition->getMethodCalls());
+    }
+
+    public function testHotPathEvents()
+    {
+        $container = new ContainerBuilder();
+
+        $container->register('foo', SubscriberService::class)->addTag('kernel.event_subscriber', array());
+        $container->register('event_dispatcher', 'stdClass');
+
+        (new RegisterListenersPass())->setHotPathEvents(array('event'))->process($container);
+
+        $this->assertTrue($container->getDefinition('foo')->hasTag('container.hot_path'));
     }
 
     /**
@@ -196,5 +172,8 @@ class SubscriberService implements \Symfony\Component\EventDispatcher\EventSubsc
 {
     public static function getSubscribedEvents()
     {
+        return array(
+            'event' => 'onEvent',
+        );
     }
 }
diff --git a/vendor/symfony/event-dispatcher/Tests/EventTest.php b/vendor/symfony/event-dispatcher/Tests/EventTest.php
index 9a822670..5be2ea09 100644
--- a/vendor/symfony/event-dispatcher/Tests/EventTest.php
+++ b/vendor/symfony/event-dispatcher/Tests/EventTest.php
@@ -11,13 +11,13 @@
 
 namespace Symfony\Component\EventDispatcher\Tests;
 
+use PHPUnit\Framework\TestCase;
 use Symfony\Component\EventDispatcher\Event;
-use Symfony\Component\EventDispatcher\EventDispatcher;
 
 /**
  * Test class for Event.
  */
-class EventTest extends \PHPUnit_Framework_TestCase
+class EventTest extends TestCase
 {
     /**
      * @var \Symfony\Component\EventDispatcher\Event
@@ -25,18 +25,12 @@ class EventTest extends \PHPUnit_Framework_TestCase
     protected $event;
 
     /**
-     * @var \Symfony\Component\EventDispatcher\EventDispatcher
-     */
-    protected $dispatcher;
-
-    /**
      * Sets up the fixture, for example, opens a network connection.
      * This method is called before a test is executed.
      */
     protected function setUp()
     {
         $this->event = new Event();
-        $this->dispatcher = new EventDispatcher();
     }
 
     /**
@@ -46,7 +40,6 @@ class EventTest extends \PHPUnit_Framework_TestCase
     protected function tearDown()
     {
         $this->event = null;
-        $this->dispatcher = null;
     }
 
     public function testIsPropagationStopped()
@@ -59,38 +52,4 @@ class EventTest extends \PHPUnit_Framework_TestCase
         $this->event->stopPropagation();
         $this->assertTrue($this->event->isPropagationStopped());
     }
-
-    /**
-     * @group legacy
-     */
-    public function testLegacySetDispatcher()
-    {
-        $this->event->setDispatcher($this->dispatcher);
-        $this->assertSame($this->dispatcher, $this->event->getDispatcher());
-    }
-
-    /**
-     * @group legacy
-     */
-    public function testLegacyGetDispatcher()
-    {
-        $this->assertNull($this->event->getDispatcher());
-    }
-
-    /**
-     * @group legacy
-     */
-    public function testLegacyGetName()
-    {
-        $this->assertNull($this->event->getName());
-    }
-
-    /**
-     * @group legacy
-     */
-    public function testLegacySetName()
-    {
-        $this->event->setName('foo');
-        $this->assertEquals('foo', $this->event->getName());
-    }
 }
diff --git a/vendor/symfony/event-dispatcher/Tests/GenericEventTest.php b/vendor/symfony/event-dispatcher/Tests/GenericEventTest.php
index aebd82da..9cf68c98 100644
--- a/vendor/symfony/event-dispatcher/Tests/GenericEventTest.php
+++ b/vendor/symfony/event-dispatcher/Tests/GenericEventTest.php
@@ -11,12 +11,13 @@
 
 namespace Symfony\Component\EventDispatcher\Tests;
 
+use PHPUnit\Framework\TestCase;
 use Symfony\Component\EventDispatcher\GenericEvent;
 
 /**
  * Test class for Event.
  */
-class GenericEventTest extends \PHPUnit_Framework_TestCase
+class GenericEventTest extends TestCase
 {
     /**
      * @var GenericEvent
@@ -95,7 +96,7 @@ class GenericEventTest extends \PHPUnit_Framework_TestCase
         $this->assertEquals('Event', $this->event['name']);
 
         // test getting invalid arg
-        $this->setExpectedException('InvalidArgumentException');
+        $this->{method_exists($this, $_ = 'expectException') ? $_ : 'setExpectedException'}('InvalidArgumentException');
         $this->assertFalse($this->event['nameNotExist']);
     }
 
@@ -113,8 +114,8 @@ class GenericEventTest extends \PHPUnit_Framework_TestCase
 
     public function testOffsetIsset()
     {
-        $this->assertTrue(isset($this->event['name']));
-        $this->assertFalse(isset($this->event['nameNotExist']));
+        $this->assertArrayHasKey('name', $this->event);
+        $this->assertArrayNotHasKey('nameNotExist', $this->event);
     }
 
     public function testHasArgument()
diff --git a/vendor/symfony/event-dispatcher/Tests/ImmutableEventDispatcherTest.php b/vendor/symfony/event-dispatcher/Tests/ImmutableEventDispatcherTest.php
index 80a7e43b..04f2861e 100644
--- a/vendor/symfony/event-dispatcher/Tests/ImmutableEventDispatcherTest.php
+++ b/vendor/symfony/event-dispatcher/Tests/ImmutableEventDispatcherTest.php
@@ -11,13 +11,14 @@
 
 namespace Symfony\Component\EventDispatcher\Tests;
 
+use PHPUnit\Framework\TestCase;
 use Symfony\Component\EventDispatcher\Event;
 use Symfony\Component\EventDispatcher\ImmutableEventDispatcher;
 
 /**
  * @author Bernhard Schussek <bschussek@gmail.com>
  */
-class ImmutableEventDispatcherTest extends \PHPUnit_Framework_TestCase
+class ImmutableEventDispatcherTest extends TestCase
 {
     /**
      * @var \PHPUnit_Framework_MockObject_MockObject
@@ -31,7 +32,7 @@ class ImmutableEventDispatcherTest extends \PHPUnit_Framework_TestCase
 
     protected function setUp()
     {
-        $this->innerDispatcher = $this->getMock('Symfony\Component\EventDispatcher\EventDispatcherInterface');
+        $this->innerDispatcher = $this->getMockBuilder('Symfony\Component\EventDispatcher\EventDispatcherInterface')->getMock();
         $this->dispatcher = new ImmutableEventDispatcher($this->innerDispatcher);
     }
 
@@ -80,7 +81,7 @@ class ImmutableEventDispatcherTest extends \PHPUnit_Framework_TestCase
      */
     public function testAddSubscriberDisallowed()
     {
-        $subscriber = $this->getMock('Symfony\Component\EventDispatcher\EventSubscriberInterface');
+        $subscriber = $this->getMockBuilder('Symfony\Component\EventDispatcher\EventSubscriberInterface')->getMock();
 
         $this->dispatcher->addSubscriber($subscriber);
     }
@@ -98,7 +99,7 @@ class ImmutableEventDispatcherTest extends \PHPUnit_Framework_TestCase
      */
     public function testRemoveSubscriberDisallowed()
     {
-        $subscriber = $this->getMock('Symfony\Component\EventDispatcher\EventSubscriberInterface');
+        $subscriber = $this->getMockBuilder('Symfony\Component\EventDispatcher\EventSubscriberInterface')->getMock();
 
         $this->dispatcher->removeSubscriber($subscriber);
     }
diff --git a/vendor/symfony/event-dispatcher/composer.json b/vendor/symfony/event-dispatcher/composer.json
index 3a20c35f..75b881b9 100644
--- a/vendor/symfony/event-dispatcher/composer.json
+++ b/vendor/symfony/event-dispatcher/composer.json
@@ -16,15 +16,18 @@
         }
     ],
     "require": {
-        "php": ">=5.3.9"
+        "php": "^5.5.9|>=7.0.8"
     },
     "require-dev": {
-        "symfony/dependency-injection": "~2.6",
-        "symfony/expression-language": "~2.6",
-        "symfony/config": "~2.0,>=2.0.5",
-        "symfony/stopwatch": "~2.3",
+        "symfony/dependency-injection": "~3.3|~4.0",
+        "symfony/expression-language": "~2.8|~3.0|~4.0",
+        "symfony/config": "~2.8|~3.0|~4.0",
+        "symfony/stopwatch": "~2.8|~3.0|~4.0",
         "psr/log": "~1.0"
     },
+    "conflict": {
+        "symfony/dependency-injection": "<3.3"
+    },
     "suggest": {
         "symfony/dependency-injection": "",
         "symfony/http-kernel": ""
@@ -38,7 +41,7 @@
     "minimum-stability": "dev",
     "extra": {
         "branch-alias": {
-            "dev-master": "2.7-dev"
+            "dev-master": "3.4-dev"
         }
     }
 }
diff --git a/vendor/symfony/event-dispatcher/phpunit.xml.dist b/vendor/symfony/event-dispatcher/phpunit.xml.dist
index ae0586e0..b3ad1bdf 100644
--- a/vendor/symfony/event-dispatcher/phpunit.xml.dist
+++ b/vendor/symfony/event-dispatcher/phpunit.xml.dist
@@ -5,6 +5,8 @@
          backupGlobals="false"
          colors="true"
          bootstrap="vendor/autoload.php"
+         failOnRisky="true"
+         failOnWarning="true"
 >
     <php>
         <ini name="error_reporting" value="-1" />