I tried to move BinaryLoader to /examples/js but SceneLoader needs it.
Curious to hear what people thinks about this change.

That was a tough one: spotlights were randomly working / not-working based on completely unrelated stuff.

This adds 2 extra parameters to SpotLight:

- "angle" for controlling light cone width
- "exponent" for controlling sideways light attenuation (from light->target axis towards edges of light cone)

Warning: this changes appearance of everything that used old fake SpotLight. To get approximately similar look use these parameter values:

```
spotLight.angle = Math.PI;
spotLight.exponent = 1;
```

Todo:

- implement spotlights in normal map and skin shaders
- check what's going on with vertex colors and ambient term in unlit parts
- check shadowmap darkening vs unlit parts darkening
- maybe some better formula for light cone attenuation, current one varies too wildly with cone angle

This reverts commit de6d62bf.

(Phewww!) I'm sure there are still things I missed...

Some weird warning saying THREE.REVISION isn't defined :/
Need to improve this build.py some day...

This is now done as method of Matrix3 object which gets as a parameter Matrix4 object to be inverted (to be consistent with how Matrix4 => Matrix4 inversion is done).

As per discussion in #1615.

Should fix issue #1647

Added CustomBlending mode. Added texture.premultiplyAlpha parameter. Added standard and custom blending examples.

Thanks to @toji for the suggestion.

Thanks Closure compiler.

Set it to "true" to rebuild the shader.

As per discussion in #1534

Changed vertexColor default from "false" to "THREE.NoColor" constant. Added missing morphNormals parameter to ShaderMaterial.

Modified MD2CharacterComplex to allow for sharing of geometries and textures. Added API for toggling shadows and visibility.