Allow analyzing dependency graph for different versions of spring boot.
Log a waring/error when spring provides properties files doesn't jive with dependency graph.
Rebuilding stuff with aether.
 Step 1: managed dependencies discovery now working.
Remove obsolete PomGenerator class
Add test for managed dependency discovery
Typegraph+dep graph now computed with aether.
Still to do, resurrect graph simplification algos as well.
Graph simplification algo working again