add c'tor to TarjanEdgeData, use emplace_back in-place construction of edges
set projection to EPSG:4326 for created shapefile
remove zombie code from StronglyConnectedComponents.h
remove zombie code from StronglyConnectedComponents.h
use boost::irange and range based for loop in         // for (NodeID node = 0; node < last_node; ++node)
reformat SCC class, make sure road distances are not counted twice
make sure edges are put into shapefile once and only once.
rename variables in SCC class to be more legible
rename variables in SCC class, add const to variables, reformat
add timing to SCC generation