Tim3D-level2.xml - original models and scale
levels demonstrating simulation speed in different scale:
Tim3D-level-100.xml - original scale, slow simulation
Tim3D-level-50.xml - 50% scale, better simulation speed
Tim3D-level-25.xml - 25% scale, good speed, but greater distance between models
added new, but similar models, because the original models are not reliable
added better support for keyboard and mouse control
included all .max level files for 3ds Max 2013
