Started preparing the code for the new feature: lazy creation of the new dependency graph.
lazy new result builder
Some refactoring close to the DependencyGraphBuilder

Attempted to make the code more consistent, removed some collaborators from the DGB. Further refactoring including a rename job is still pending.
Removed my author tag (ps. I'll miss you).
Old dependency graph data is now stored in a byte stream. This way, it is easy to serialize it.