It is, although it's not the best UX at the moment. In the details about any page that you're tracking, the past snapshot runs will be listed on the left side.

It is, although it's not the best UX at the moment. In the details about any page that you're tracking, the past snapshot runs will be listed on the left side. You can go to any point in time, view it, and compare it to the previous time something actually changed.