updated CHANGELOG and bumped version to 0.9.7

CHANGELOG

@@ -1,4 +1,4 @@
-* 0.9.7-DEV
+* 0.9.7 (2010-06-12)
 
 Backward incompatibilities:
  * changed 'as' to '=' for the set tag ({% set title as "Title" %} must now be {% set title = "Title" %})

lib/Twig/Environment.php

@@ -11,7 +11,7 @@
 
 class Twig_Environment
 {
-    const VERSION = '0.9.7-DEV';
+    const VERSION = '0.9.7';
 
     protected $charset;
     protected $loader;