Set version to 9.0.0

Author: lochmueller

ext_emconf.php

@@ -6,7 +6,7 @@
     'title' => 'StaticFileCache',
     'description' => 'Transparent StaticFileCache solution using mod_rewrite and mod_expires. Increase performance for static pages by a factor of 230!!',
     'category' => 'fe',
-    'version' => '9.0.0-dev',
+    'version' => '9.0.0',
     'state' => 'stable',
     'modify_tables' => 'pages',
     'clearcacheonload' => true,