From the demo it does not appear that the history of changes made to an article are kept. Did I miss it or is that feature not yet available?
History is kept and is available. Example:
Great but where is the link in the article itself to see its history ?
There is a "properties" link next to the article name and description (see the icon http://www.corendal.com/java-corendal/images/wiki/properties.png\)