updated vendors for 2.0.15

vendors.php

@@ -32,12 +32,12 @@ if (isset($argv[1]) && in_array($argv[1], array('--transport=http', '--transport
 }
 
 $deps = array(
-    array('doctrine', 'http://github.com/doctrine/doctrine2.git', '2.1.6'),
-    array('doctrine-dbal', 'http://github.com/doctrine/dbal.git', '2.1.6'),
+    array('doctrine', 'http://github.com/doctrine/doctrine2.git', '2.1.7'),
+    array('doctrine-dbal', 'http://github.com/doctrine/dbal.git', '2.1.7'),
     array('doctrine-common', 'http://github.com/doctrine/common.git', '2.1.4'),
     array('monolog', 'http://github.com/Seldaek/monolog.git', '1.0.2'),
     array('swiftmailer', 'http://github.com/swiftmailer/swiftmailer.git', 'v4.1.7'),
-    array('twig', 'http://github.com/fabpot/Twig.git', 'v1.7.0'),
+    array('twig', 'http://github.com/fabpot/Twig.git', 'v1.8.2'),
 );
 
 foreach ($deps as $dep) {