Added increment_string() docs and changelog.
diff --git a/user_guide/changelog.html b/user_guide/changelog.html
index 8f0fad7..20b1c4e 100644
--- a/user_guide/changelog.html
+++ b/user_guide/changelog.html
@@ -70,6 +70,7 @@
 	</li>
 	<li>Helpers
 		<ul>
+			<li class="reactor">Added <samp>increment_string()</samp> to <a href="helpers/string_helper.html">String Helper</a> to turn "foo" into "foo-1" or "foo-1" into "foo-2".</li>
 		</ul>
 	</li>
 	<li>Database