added Security class docs, cleaned up Input class for changes to both
diff --git a/user_guide/changelog.html b/user_guide/changelog.html
index 8dcc906..eb5cf93 100644
--- a/user_guide/changelog.html
+++ b/user_guide/changelog.html
@@ -72,6 +72,7 @@
</ul>
<li>Libraries
<ul>
+ <li>Added <a href="./libraries/security.html">Security library</a>, which now contains the <dfn>xss_clean</dfn> function, <dfn>filename_security</dfn> function and other security related functions.</li>
<li>Added <var>$parse_exec_vars</var> property to Output library.</li>
<li>Added ability to enable / disable individual sections of the <a href="general/profiling.html">Profiler</a></li>
<li>Added "is_object" into the list of unit tests capable of being run.</li>