updated tutorial "demo/lights" fixing obsolete MTCH_GLOW
updated tutorial "rendering/materials" fixing obsolete MTCH_GLOW
new shadowing technique SHD_MAP_HW (faster and automatically filtered)

new tutorial "rendering/particles"

particle textures can now be colored
new tutorial "mesh/grass 2"
updated tutorial "mesh/grass"
updated tutorial "demos/nature"
updated MSHB::crtGrass method
updated WHEEL::mtrx method
Mesh Editor : ability to disable texture compression
Mesh Editor : ability to insert cube, sphere, capsule, tube meshes
Phys is now automatically deleted
new method GFX::downSampleNrm for downsampling normal maps
Icons tool : added control of lights, bloom, and creation of icons sets
removed bump mapping mode BMP_NONE
World Editor : added Slope Limiter in material placing