0.1.0 update

In this update, there is new bugfixes and features :

• Navigable menus (now with keyboard and gamepad)
• Camera rotation with right analog stick (or 4, 6 keys)
• Input indicator hud (steer, throttle, reverse, handbrake)
• Tire slip indicators
• New bugfixed and larger checkpoints / start / finish, with temporary new design
• New test area in the playground

Don't hesitate to reach me if you encounter any problem or if you want to request a feature