- Major code cleanups.
- Improved the effect framework structure.
- Removed some EffectParameter methods.
- Internalized EffectPass.Apply().
- Internalized the GraphicsDevice constructor.
- Moved the TextureHelper functionality to the Texture class.
- Added the Root class to Exon.Engine.
- Internalized the AudioEngine and ContentManager class.
- Removed GraphicsDevice.WindowHandle and GameWindow.WindowHandle.
- GraphicsDevice is now unique, and managed by the Root class (singleton).