If KTX2 loader wasn't registered, we would previously fail to load GLTF
files that used BasisU; this is a problem since files that don't require
BasisU support but specify it optionally would incorrectly fail.

The tradeoff here is that the error message that we previously emitted
for cases where the extension was required is now no more; we need some
mechanism for required extensions to actually be enforced to solve this.

Examples: Resolve linter issues.

Update SelectionHelper.js

updating js version of SelectionHelper

Adding updated mouse event listeners so this works on modern browsers. (old code did not work on Chrome)

Examples: Clean up comments.

Examples: Clean up.

Examples: More clean up.

Examples: More clean up.

Examples: More clean up.

Examples: More clean up.

Examples: More clean up.

Examples: Update name of face mesh in skinning/morph demo.

Fix OBJLoader not generating normals when the file does not describe …

Examples: More clean up.

Examples: Clean up web audio demos.

Remove Scene.dispose definition

Doc: Updated Quaternion.setFromRotationMatrix() to specify the matrix needs to be pure

Examples: Remove THREE.Fire.