Added $this->output->set_content_type() and method chaining to other methods.
diff --git a/user_guide/changelog.html b/user_guide/changelog.html
index d759686..815590d 100644
--- a/user_guide/changelog.html
+++ b/user_guide/changelog.html
@@ -74,6 +74,8 @@
<li class="reactor">Added <kbd>decimal</kbd>, <kbd>less_than</kbd> and <kbd>greater_than</kbd> rules to the <a href="libraries/form_validation.html">Form validation Class</a>.</li>
<li class="reactor"><a href="libraries/input.html">Input Class</a> methods <kbd>post()</kbd> and <kbd>get()</kbd> will now return a full array if the first argument is not provided.</li>
<li class="reactor">Secure cookies can now be made with the <kbd>set_cookie()</kbd> helper and <a href="libraries/input.html">Input Class</a> method.</li>
+ <li class="reactor">Added <kbd>set_content_type()</kbd> to <a href="libraries/output.html">Output Class</a> to set the output <kbd>Content-Type</kbd> HTTP header based on a MIME Type or a config/mimes.php array key.</li>
+ <li class="reactor"><a href="libraries/output.html">Output Class</a> will now support method chaining.</li>
</ul>
</li>
</ul>