Dagon Demo 0.5.0

• Uses Dagon 0.5.0 (OpenGL 3.3).
• All scenes were combined into one. There's no menu for now.
• The demo shows how to load static and animated meshes, assign materials and textures, create lights and a particle system, control the character, integrate a physics engine, apply post-processing, render 2D text and much more.
• Point lights are now spherical area lights.