Yea, noticed the newest is 1.1... I'd prefer to find a debian package for it rather than building it though, I often need to rebuild machines and I always regret adding steps like this (I can just stick with screen since it's everywhere for free). I'll see what I can find... Thanks.
Some commands are still not working (pane-active-border-bg and capture-pane, it seems) but I can take a closer look at those after playing with it for a while and getting comfortable.