This is a bigger update containing a new gamemode, changes to older gamemodes, fixes and some new stuff.

• New gamemode (Rally), which has different (realistic) physics and new track generation
• Added rain on windows effect
• Improved audio analysis
• Decreased the maximum speed
• Optimizations
• Added support for more audio file formats (ogg, aiff)
• Fixed reading of some file formats
• Bunch of various tweaks and fixes