Clean Surface, Filter
Clean Camera, Joystick, Window
Create Geometry, Material, Mesh, Scene, Light, Layer
Update Scene, Material, Layer. Rename Manip to Manipulator
Update Layer, Scene and Camera
Migration Window.viewport to Renderer2.viewport. Clean Shader
Remove Binder and Location SuperClass
Update Camera and Input
Impl Material and ColorMaterial
Impl CubeGeometry. Deprecated Manipulator. Rename as Vector3 and Matrix4
Update Material.set_param()--add static assert
Draw Wierd Square
Draw Proper Cube
Updated example2
Impl wireframe
Impl Geometry.rotate, CoordinateSystem
Impl Geometry.rotate_impl
Unittest Geometry
Delete example_*.d, Rename example2.d