prepared the 1.34.1 release

CHANGELOG

@@ -1,4 +1,4 @@
-* 2.4.1 (2017-XX-XX)
+* 2.4.1 (2017-06-05)
 
  * fixed namespaces introduction
 

lib/Twig/Environment.php

@@ -16,12 +16,12 @@
  */
 class Twig_Environment
 {
-    const VERSION = '2.4.1-DEV';
+    const VERSION = '2.4.1';
     const VERSION_ID = 20401;
     const MAJOR_VERSION = 2;
     const MINOR_VERSION = 4;
     const RELEASE_VERSION = 1;
-    const EXTRA_VERSION = 'DEV';
+    const EXTRA_VERSION = '';
 
     private $charset;
     private $loader;