merge
Roads know which traffic lights are attached to them
helper methods
Merged 'develop'.

Conflicts:
	core/src/main/java/trafficsim/factories/EntityFactory.java
Added lightToRoadConnection back
Merged the 2 creaate light methods
Traffic Light awareness day
Corrected angles for left lights
Merged 'develop'.
Traffic light angles
Re-added spawn points, minor fix to steering
Finish cars_aware_of_traffic_lights