Version 2.0.0-beta2

This release brings lots of changes. API should be more or less stabilized now:

• Added vertex animation support (which is now the default in meshtool since there is a bug with skinned meshes)
• Added animation sequences
• Shadow tex size can now be changed at runtime
• Sun distance can be specified for shadow calculation
• Added Shader class
• Added previous depth pass to avoid computing redundant fragments
• Added different draw modes to surfaces (points, lines, triangles, triangle strip, triangle fan)
• Math3D library has been completely rewritten
• Renamed Material.BaseTexture to Material.ColorTexture
• Added Material.SpecularTexture
• Added Material.CubeTexture and removed Reflection and Refraction textures (now a material can only have one cubemap)
• Added Material.CubeOpacity
• Added Lighting and ReceiveShadows properties to Material
• Added Shader property to Material
• Returned to previous FPS based animation system, instead of the duration based one
• Does not parse GL version on init anymore to prevent crash on some old Android versions
• Reduced the number of shader uniform and varying vars needed
• Added different shaders:
  - Minimal: No normal or specular maps, no cube mapping, no shadows
  - Minimal with shadows: No normal or specular maps, no cube mapping
  - Vertex lighting: No normal or specular maps
  - Pixel lighting
• Per pixel lighting is now the default
• Removed World.GlobalPixelLighting (You can do Shader.DefaultType(Shader.TYPE_VERTEX_LIGHTING) to switch to vertex lighting)
• Removed Cache class (added undocumented CacheSound function and Load method in classes with an optional cache param)
• Added Mesh.CreateQuad
• The script convert2monkey now also converts demos (I forgot that!)
• Removed cubemap support for Material.ColorTexture (skyboxes are rendered with a custom shader)
• Removed "Set" from all methods
• Added Material.SpecularPower
• Made default Material.Shininess 0.001
• Added Color.Multiply
• Public Renderer class renamed Graphics
• Removed Stats class (DeltaTime is now on World, the rest on Graphics)
• Mesh.UpdateBoundingBox has been renamed to Mesh.Rebuild, and now rebuilds all surfaces
• Cameras now adjust the view and ratio automatically if ViewportWidth, ViewportHeight or AspectRatio is -1 (which is now the default)
• Changed binary font format. Fonts generated with previous versions won't render correctly anymore
• Several bug fixes
• Thanks to SLotman from the Cerberus-X community for his help on Android!