Code:
* Support for metallic paint jobs
* Fixed possible rare hang or crash
* Physics parameters of the fifth wheel are configurable in physics.sii

Data:
* Updated accessories to support paint jobs
* Corrected speed limits in Austria, Belgium and Germany
* Tweaked prices and unlock levels of some accessories
* Fixed acceleration of traffic
* Tweaked accessories of traffic trucks (badges, mirrors and sunshields)
* Fixed various bugs in truck and trailer models