added improved check for controller method access so that CI does not attempt to load private or protected controller methods

added controller/method details to framework initiated 404 pages for logging
diff --git a/user_guide/changelog.html b/user_guide/changelog.html
index 80615aa..c8c74f1 100644
--- a/user_guide/changelog.html
+++ b/user_guide/changelog.html
@@ -95,6 +95,8 @@
 		    <li>Added a <a href="./helpers/path_helper.html">Path Helper</a>.</li>

 			<li>Simplified _reindex_segments() in the URI class</li>

 			<li>Escaped the '-' in the default 'permitted_uri_chars' config item, to prevent errors if developers just try to add additional characters to the end of the default expression.</li>

+			<li>Modified method calling to controllers to show a 404 when a private or protected method is accessed via a URL</li>

+			<li>Modified framework initiated 404s to log the controller and method for invalid requests</li>

 		</ul>

 	</li>

 	<li>Helpers