WIP: using workers for movement calculation of each vehicle
Vehicles moving and attaching to segments correctly.

bugs in lane change
fixing some lane changing problems and removing delay for re-changing

WIP: adding ability to update worker count (add/remove)
seeing if threejs can easily be added for use in rendering the scene and translating the objects
more messin'
finally got something to render in 3D... now the progress can begin
segments render in 3D as parsed from map file
working on getting the vehicles moving
got things moving, but need to fix usage of y to use z instead for mover actions
working on segment reattachment issues, but things are moving correctly now :)
cars moving correctly around road.  now need to add back in collision detection logic...
adding collision detection back in.  vehicle proximity detection not working
added vehicle detection tests and reworked logic for same
vehicle lookahead mostly there, but working out problems with next-segment lookup
fixed next-segment vehicle detection and increased slow-speed braking distance
collision detection and cornering both working acceptably
traffic light working
huge step forward in vehicle detection logic
simplified logic for rotation and movement
in progress commit.  lookahead isn't working correctly