Merge branch '4.4'

* 4.4:
  Add return types to internal & magic methods when possible
  fixed CSC
  Add Address::fromString
  [DomCrawler] Added Crawler::matches(), ::closest(), ::outerHtml()

Author: nicolas-grekas

Exception/AuthenticationException.php

@@ -102,7 +102,7 @@ public function getMessageData()
     /**
      * @internal
      */
-    public function __sleep()
+    public function __sleep(): array
     {
         $this->serialized = $this->__serialize();
 

Tests/Authentication/AuthenticationTrustResolverTest.php

@@ -119,7 +119,7 @@ public function __serialize(): array
     {
     }
 
-    public function serialize()
+    public function serialize(): string
     {
     }
 

Tests/Authentication/Token/AbstractTokenTest.php

@@ -173,7 +173,7 @@ public function __construct($name)
         $this->name = $name;
     }
 
-    public function __toString()
+    public function __toString(): string
     {
         return $this->name;
     }

Tests/SecurityTest.php

@@ -100,7 +100,7 @@ private function createContainer($serviceId, $serviceObject)
 
 class StringishUser
 {
-    public function __toString()
+    public function __toString(): string
     {
         return 'stringish_user';
     }