Officially transition from 1.7 -> 2.0, mass substitution. Also, wrote WHATSNEW. We are in feature-freeze!

git-svn-id: http://htmlpurifier.org/svnroot/htmlpurifier/trunk@1172 48356398-32a2-884e-a903-53898d9a118a

library/HTMLPurifier/DefinitionCache/Serializer.php

@@ -9,7 +9,7 @@ HTMLPurifier_ConfigSchema::define(
     Default is within the
     HTML Purifier library inside DefinitionCache/Serializer. This
     path must be writable by the webserver. This directive has been
-    available since 1.7.0.
+    available since 2.0.0.
 </p>
 ');