add support for locations that are not reachable as well as information about location permutaton
add support for locations that are not reachable as well as information about location permutaton

oxidase/osrm-backend,frodrigo/osrm-backend,raymond0/osrm-backend,frodrigo/osrm-backend,bjtaylor1/osrm-backend,neilbu/osrm-backend,beemogmbh/osrm-backend,yuryleb/osrm-backend,oxidase/osrm-backend,arnekaiser/osrm-backend,yuryleb/osrm-backend,yuryleb/osrm-backend,duizendnegen/osrm-backend,hydrays/osrm-backend,duizendnegen/osrm-backend,frodrigo/osrm-backend,raymond0/osrm-backend,hydrays/osrm-backend,deniskoronchik/osrm-backend,Conggge/osrm-backend,yuryleb/osrm-backend,Conggge/osrm-backend,duizendnegen/osrm-backend,KnockSoftware/osrm-backend,deniskoronchik/osrm-backend,Project-OSRM/osrm-backend,frodrigo/osrm-backend,hydrays/osrm-backend,neilbu/osrm-backend,neilbu/osrm-backend,duizendnegen/osrm-backend,KnockSoftware/osrm-backend,felixguendling/osrm-backend,oxidase/osrm-backend,arnekaiser/osrm-backend,deniskoronchik/osrm-backend,arnekaiser/osrm-backend,bjtaylor1/osrm-backend,bjtaylor1/osrm-backend,neilbu/osrm-backend,Project-OSRM/osrm-backend,beemogmbh/osrm-backend,oxidase/osrm-backend,deniskoronchik/osrm-backend,hydrays/osrm-backend,KnockSoftware/osrm-backend,raymond0/osrm-backend,felixguendling/osrm-backend,Conggge/osrm-backend,KnockSoftware/osrm-backend,beemogmbh/osrm-backend,raymond0/osrm-backend,Conggge/osrm-backend,Project-OSRM/osrm-backend,Project-OSRM/osrm-backend,beemogmbh/osrm-backend,bjtaylor1/osrm-backend,arnekaiser/osrm-backend,felixguendling/osrm-backend