Changed regex for onfoo event handlers to prevent unwanted matching of text such as locatiON, cONtent, etc.
diff --git a/user_guide/changelog.html b/user_guide/changelog.html
index 3e83cca..0766911 100644
--- a/user_guide/changelog.html
+++ b/user_guide/changelog.html
@@ -77,7 +77,7 @@
 

 <h3>Bug fixes for 1.6.4</h3>

 <ul>

-	<li>No bug fixes yet</li>

+	<li>Fixed bug in xss_clean() that could remove some desirable tag attributes.</li>

 </ul>

 

 <h2>Version 1.6.3</h2>