This information is just for posterity so that if you are interested you can see what has changed with the theme lately:
Version 1.80 added a few icons to a couple of modules (Syslog-NG/MIME Type Programs).
Version 1.79 utilises the Prototype/script.aculo.us Javascript libraries instead of my basic home grown ones. A bonus of this is that keyboard navigation of search results is now possible (very cool).
Version 1.78 fixes an issue with module specific onload html events not being executed.
Specifically this effected the html email editor in Usermin which now works as expected.