Docs: Add live example to intro guide.

Reuse "added" and "removed" event

# Conflicts:
#	src/core/Object3D.js

OrbitControls: removed legacy warnings

STL loader improve memory usage

# Conflicts:
#	examples/webgl_loader_ctm.html

NodeMaterial: Bias example (clean up)

Remove remaining IIFEs from core.

NodeMaterial: Bias example

Fixed CubeTextureNode having incorrect roughness

Update Matrix4.html

Fix off-by-one error in computing shadow map texture coordinates

Material: Add clearCoatNormalMap/Scale to .toJSON() and loader.

Fix non-ENERGY_PRESERVATION merge conflict

Material.d.ts: Remove update().