Fixed conflicted changelog.
diff --git a/user_guide/changelog.html b/user_guide/changelog.html
index c1ee37f..95270fe 100644
--- a/user_guide/changelog.html
+++ b/user_guide/changelog.html
@@ -84,6 +84,8 @@
<li>Libraries
<ul>
<li>Altered Session to use a longer match against the user_agent string. See upgrade notes if using database sessions.</li>
+ <li class="reactor">Added <kbd>is_unique</kbd> to the <a href="libraries/form_validation.html">Form Validation library</a>.</li>
+ <li class="reactor">Added <kbd>$this->db->set_dbprefix()</kbd> to the <a href="database/queries.html">Database Driver</a>.</li>
</ul>
</li>
</ul>