Merge pull request #62 from santhnm2/car_logic

Order of Car movement fix
modified dijkstra to account for speed limits.
trying to make a working 'baseline' path.
changed the name of useDijkstra to minimizeTime
Merge pull request #63 from santhnm2/car_logic

Traffic Lights changing mechanism fixes
Merge pull request #64 from santhnm2/optimization

Optimization