updated changelog for release

changelog.html

@@ -58,6 +58,10 @@ Upcoming changes</a>
   <li class=>
 </ul>
 </div><!--=TRUNK-END=-->
+<h3><a name=v1.624>What's new in 1.624</a> (2015/08/09)</h3>
+<ul class=image>
+  <li class=>
+</ul>
 <h3><a name=v1.623>What's new in 1.623</a> (2015/08/02)</h3>
 <p><em>No major user-visible changes in this release.</em></p>
 <h3><a name=v1.622>What's new in 1.622</a> (2015/07/27)</h3>