Shaders initial commit
ParticleEffect added as a SceneActor
Virtual file system implemented for resource managment (zip support added)
Particle engine framework implemented (ready for futher development)
WtEdittor fixed (resource managment part)
Scene serialization revamped
Actor attachment system implemented
Memory streamas, bounding boxes added. WtEditor lighting, scene, actor, terrain editor fixed and improved
Several WtEditor bugs fixed, GUI tweaked, transparency bug fixed.