- Removed remaining EffectAnnotation references in Exon.Core.
- Decoupled GraphicsAdapter and GraphicsAdapterOutput from the IDisposable interface;
they are now purely managed classes.
- Removed GraphicsAdapterCollection and GraphicsAdapterOutputCollection.
- Removed the GraphicsAdapter parameter from GraphicsDevice constructors.
- GraphicsDevice now tries to create a WARP device in case a hardware device is not available.
- Removed the Exon.Graphics.Screen class.
- Renamed SpriteBatch to SpriteRenderer.
- Renamed PrimitiveBatch to PrimitiveRenderer.
- Added Exon.Engine classes (incomplete).