Museum 2: Improved AI Nodes

Update v1.1: Minor changes to path weighting. Now cars will take both escalators at equal frequency in Reverse. Shortcut weighting is fixed for both directions.

Includes changes to both Normal and Reverse.

"Improved AI Nodes" is designed to increase the difficulty of CPUs by refining the racing line and fixing key areas that cause cars to crash/spin out. Only AI nodes are touched. CPU performance is also dependent on the level of AI parameter optimization, so the overall challenge depends on what cars are the opponents. These new nodes should provide a moderate challenge for even experienced players. Improved nodes are not fully compatible with multiplayer and will tag the track as "CHT"; therefore, please disable this installation before racing online.

Some areas were adjusted so that spinouts and crashes are less likely. In addition, more consideration was given for cars like Humma or Zipper with heavy understeer; these cars as AI opponents would usually go off track quite often so some extra routes/stricter nodes were implemented. Routes are overall better optimized with more sensible overtake line and additional pathing options.