I've got an XenForo installation that a friend and I used to run, but has since fallen to the point of being essentially dead. The end result of the neglect is that it is running old versions of just about every software that was powering the site as a whole, which includes XenForo 1.0.1; however, I'd like to work on bringing the site up-to-date and essentially taking it over as the sole owner. Is there an upgrade path that would allow a 1.0.1 installation to upgrade to 1.4.7? I know a lot was changed in subsequent major versions (1.2, 1.3 and 1.4), which is primarily why I'm asking. I do have add-ons installed, but they're basically just add-ons that have since become core features in XF, so it's not a big deal to uninstall them. Any help would be greatly appreciated!