Release cupcake

cupcake

Release V2.1.2

handle paths that don't have bridge/tunnel

short segment junctions

fixed building intersection over intersections with short segment.
fixed trigger key

roadside overpass fix

V2.1.0

fixed road overpass

roundabout detection fix

V2.0.1

fixed roundabout detection bug.

V2.0.0

uploaded to WS on 3-Feb-2021