Fixed the assignment of the transform matrix in SpriteRenderer.Begin.
Fixed transparent rendering in the renderer.
Added RenderSystem statistics and spot light bounding calculation.
Fixed SpriteRenderer.CalculateVirtualScreen().
- Removed the GameWindow.AspectRatio property.
- Replaced SceneManager.SetActiveCamera by the ActiveCamera property.
- Implemented BoundingFrustum.
- Added Root.Shutdown().
- Improved ForwardRenderSystem. It's now able to render transparent-lit entities.
- Removed BoundingBox.Infinite and BoundingSphere.Infinite.