Idea for kplato

Hi

Just been looking at kplato, and I have an idea that might be interesting - 
taking snapshots, or saving versions of a plan. If you could then show the 
plan snapshot(s) together with the current plan you could see how far you had 
slipped.  Of course, this is similar to baselines, with the advantage that 
you can have as many snapshots as you like. 

regards

Mark