DP, RC, GM, Stable and tree diagrams

[Richmond]

For us bottom-feeders it might be easier to understand why, for instance,
7.0.1 started with RC (release candidates) while 7.0.0 started with DP 
(developer previews)
if RunRev could publish some sort of tree-diagram so we could get a 
better understanding of the
relations and inter-relations between the different versions in ongoing 
development.

Richmond.