Added a few openxml document mime types, and an additional mobile agent to mimes.php and user_agents.php respectively.
diff --git a/user_guide/changelog.html b/user_guide/changelog.html
index 5106d10..2c20ce5 100644
--- a/user_guide/changelog.html
+++ b/user_guide/changelog.html
@@ -71,6 +71,7 @@
<li>Other changes
<ul>
<li>Improved performance and accuracy of xss_clean(), including reduction of false positives on image/file tests.</li>
+ <li>Added a few openxml document mime types, and an additional mobile agent to mimes.php and user_agents.php respectively.</li>
</ul>
</li>
</ul>