Removed detached nodes, which are caused by cliques self-referencing. #30
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When Cliques self-reference partial-inputs and outputs, then it can happen that a new detached component is created. In particular it can create detached component with loops in it.
These loops are not reduced in the DFS Search because they are now not reachable from the sourcenode anymore and as such cause an issue later on during BFS Depthmap building, as that requires a cycle free graph.
This adds a secondary additional pass of detached component removal between clique building and cycle reduction solving the problem.