prepared the 1.8.1 release

CHANGELOG

@@ -1,4 +1,4 @@
-* 1.8.1 (2012-XX-XX)
+* 1.8.1 (2012-05-17)
 
  * fixed a regression when dealing with SimpleXMLElement instances in templates
  * fixed "is_safe" value for the "dump" function when "html_errors" is not defined in php.ini

ext/twig/php_twig.h

@@ -15,7 +15,7 @@
 #ifndef PHP_TWIG_H
 #define PHP_TWIG_H
 
-#define PHP_TWIG_VERSION "1.8.1-DEV"
+#define PHP_TWIG_VERSION "1.8.1"
 
 #include "php.h"
 

lib/Twig/Environment.php

@@ -17,7 +17,7 @@
  */
 class Twig_Environment
 {
-    const VERSION = '1.8.1-DEV';
+    const VERSION = '1.8.1';
 
     protected $charset;
     protected $loader;