prepared the 1.4.0-RC1 release

CHANGELOG

@@ -1,4 +1,4 @@
-* 1.4.0
+* 1.4.0-RC1 (2011-11-20)
 
  * optimized variable access when using PHP 5.4
  * changed the precedence of the .. operator to be more consistent with languages that implements such a feature like Ruby

lib/Twig/Environment.php

@@ -17,7 +17,7 @@
  */
 class Twig_Environment
 {
-    const VERSION = '1.4.0-DEV';
+    const VERSION = '1.4.0-RC1';
 
     protected $charset;
     protected $loader;