Currently I have compojoom comment 4.1.8 on a Joomla 1.5.25 installation. Is this the latest version? Or which number would that be? Does the latest version work with Joomla 1.5 as well as Joomla 2.5? Or would I have to "migrate" compojoom, too, when I shall migrate the whole Joomla thing to 2.5?