Outdated Hectic Delivery (Gull) 1.3

First of all, new traffic scenarios are coming soon. Don't worry, I'm not stuck on this one! I wanna polish my code as much as possible so new scenarios will be easier to create and optimize.

New stuff:

• Traffic vehicles can appear in a variety of colors! It will feel like there are more unique drivers in the world. As far as I can tell, this doesn't add any more lag.
• New anti-stutter code. When a traffic car teleports, the game shouldn't lock up on frames so much. However, the frame rate may still drop briefly. Better CPUs will have better results. I'm still working on optimizing this.
• Cleaner Lua code

Known issues:

• Rarely, traffic cars can get amnesia and drive off the road. This is a side effect of the new code (the AI can get disabled for a little bit).