bumped minimal version of Swiftmailer to 4.2.0

autoload.php.dist

@@ -36,5 +36,5 @@ if (is_file(__DIR__.'/vendor/doctrine-common/lib/Doctrine/Common/Annotations/Ann
 
 if (is_file(__DIR__.'/vendor/swiftmailer/lib/classes/Swift.php')) {
     require_once __DIR__.'/vendor/swiftmailer/lib/classes/Swift.php';
-    Swift::registerAutoload(__DIR__.'/vendor/swiftmailer/lib/swift_init.php');
+    Swift::registerAutoload(function () { require __DIR__.'/vendor/swiftmailer/lib/swift_init.php'; });
 }

src/Symfony/Bridge/Swiftmailer/composer.json

@@ -17,7 +17,7 @@
     ],
     "require": {
         "php": ">=5.3.2",
-        "swiftmailer/swiftmailer": ">=4.1.2,<4.3-dev"
+        "swiftmailer/swiftmailer": ">=4.2.0,<4.3-dev"
     },
     "suggest": {
         "symfony/http-kernel": "self.version"