Update 2019-03-21

I've added the following:

• Voronoi field, which makes the car go through narrow passages instead of driving the long way around them. Is also making the path smoothing faster
• All Reeds-Shepp paths
• GUI to make it easier to click between debug textures
• Cleaned and optimized code
• Semi truck with trailer, which is sometimes scratching some paint here and there :) So it will need some more optimizations but is generally working
• A forward and reverse path, to make it easier for the vehicles to follow the path more accurately