fixed shortest path bug #28
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bug fixed, short explanation
example (propC having two paths):
entity
The recursive function would go in sequence, find propC under propA and mark it as "found" - encounters propC later and skips it as "already found" - effectively using the longer path
This is fixed now, before recursing, propA, propB and propC on the first level are marked as found, ensuring the shortest path is always taken.
I also added some inline comments to make the code (hopefully) easier to understand