* added allow traversal flag
* Added test to verify a single router connection that is marked untraversable fails path creating
* Updated default cost to be one step above the threshold to avoid overflow.
* Updated checks to only care about middle routers. Fixed relevant unit tests and added test with untraversable middle router.
* Refactor allowTraversal to be flipped to noTraversal
* default noTraversal to false
* Added cost to routers and relevant persistence and path checking.
* removed router cost from config
* changed cost to be required on update
* removed some import reorderings and added fingerprint to be required
* missed one line
Cam Otts