Undo autogenerate hotspots, autogenerate for one image only

Setting up a tour is time consuming. By mistake i clicked autogenerate hotspots, thinking it was for the one image only, and not the whole tour. I lost a few hours work. Therefore please:

• keep hotspot history / hotspot version available so it is possible to undo mistakes.

• Keep a tour history so one can go back in time to a previous tour

• Make it possible to autogenerate hotspots for one image at a time, or for the whole tour.