2011-08-19, 20:15
<import addon="script.module.urlresolver" version="0.0.1"/> means that addon need script.module.urlresolver ver 0.0.1 or higher. You can have only 1 version of addon (previous versions are stored in addons/packages). If in any installed repository there is available addon with higher version xbmc will auto-update it - that is if user didn't turn off auto-updates).