enable use of param in a callback rule, on behalf of marcoscoelho.
diff --git a/user_guide/changelog.html b/user_guide/changelog.html
index a924edc..8a6fea7 100644
--- a/user_guide/changelog.html
+++ b/user_guide/changelog.html
@@ -75,6 +75,7 @@
<li>Removed internal usage of the <samp>EXT</samp> constant.</li>
<li>Visual updates to the welcome_message view file and default error templates. Thanks to <a href="https://bitbucket.org/danijelb">danijelb</a> for the pull request.</li>
<li>Added <samp>insert_batch()</samp> function to the PostgreSQL database driver. Thanks to epallerols for the patch.</li>
+ <li class="reactor">Callback validation rules can now accept parameters like any other validation rule.</li>
</ul>
</li>
<li>Helpers