* The new system allow us to add lights and cameras as children of any object without hacks.
* The Camera needs to be added to a Scene. If the Camera has no parent it's added to the Scene being renderer automatically.
* I'll work on implementing this into the WebGLRenderrer tomorrow (gonna be a looong day... ).

Now `Camera` can use inherited `update()`

`renderers/Projector.js` > `core/Projector.js`

`extras/geometries/Curve.js` > `extras/core/Curve.js`
`extras/geometries/CurvePath.js` > `extras/core/CurvePath.js`
`extras/geometries/Path.j`s > `extras/core/Path.js`
`extras/geometries/Shape.js` > `extras/core/Shape.js`
`extras/geometries/TextPath.js` > `extras/core/TextPath.js`

About to try to bring Face4 back.

Fixed some examples that used ParticleCircleMaterial.

Fixed uv handling on Projector (forcing channel 0 by now)

Object3D::globalMatrix ⟶ Object3D::matrixWorld

Added hierarchy examples.

Most of the examples or working again as usual. Only `webgl_scene_test.html` and `webgl_ribbons.html` left.

Fixed matrix rotation in Projector (not fully done yet, need to implement herarchies still)

That was much tougher than expected. No wonder other WebGL video demos around the web are broken.

Firefox OpenGL / ANGLE and Chrome OpenGL were ok, getting it to work in Chrome ANGLE was rather tricky.

Please report if something got broken. I tried to go through all textured examples but I may have missed something.

If you want to refresh texture on WebGL side, you just set "texture.needsUpdate" flag (if you use Loader or ImageUtils.loadTexture / loadTextureCube everything is taken care of).

Flag has to be set also for canvas-based textures, sorry no escaping this :(. I tried and it lead to ugly problems (e.g. AO minecraft demo mixes several asynchronously loaded and generated images into one texture, with autodetect always something was broken).

"needsUpdate" should work also on cube textures, though it's not tested yet (also there I didn't put hack for Chrome ANGLE).

I need to look at this objectMatrix::extractRotationMatrix() thing. I don't think this works like that... isn't the scale applied to the rotation in the matrix?

Object3D::matrixNeedsToUpdate ⟶ Object3D::matrixNeedsUpdate

Figured out why Canvas/SVG wasn't rendering... someone changed camera.near/far to camera.zNear/zFar :P

- getters/setters are no more in Vector3
  - object hierarchies thus don't use "isDirty"
  - this was completely killing performance for anything that was touching a lot of Vector3 like creation of meshes and dynamic buffers
  - even without this, performance of hierarchies went up (a lot)

- objects do not get passed renderer anymore
  - camera was almost also removed, but this is useful for LOD (though there may be some cleaner way to do this?)

- material ids are now unified, this makes "geometry.sortFacesByMaterial" faster (thus scene init / GUI blocking is shorter)

- all WebGL examples should work now (render-to-texture has weird lights and in some camera control feels different)

- CanvasRender still broken, despite many efforts :(
   - currently only points and lines work, faces don't show up. I think this may need assistance from mrdoob.

https://github.com/mrdoob/three.js/pull/97

Moved near/far values from MeshDepthMaterial to Camera (CanvasRenderer/WebGLRenderer/WebGLRenderer2).

Projector::projectScene now does a first pass through Projector::projectObject (which does frustum culling and object sorting).
So now CanvasRenderer and SVGRenderer feature frustum culling too.

Added `boundingBox`, `boundingSphere` and `computeBoundingSphere` to Geometry.

Projector sort boolean is now required (CanvasRenderer and SVGRenderer updated).