windows build + cars

[joevenzon]

noticed a lack of contact points in the new xs file. should those be removed them in the v2 conversion?

Contact points are only used to add masses to the car, exactly the same as with the particles. In vamos contact points were actually how you defined the contact mesh (in addition to defining masses), so it's left over from that, and a lot of cars have contact points with masses of 0.05. If the contact point masses are < 1kg then just remove the contact points section, because it's unnecessary and might be confusing to people who are making new cars.