SceneLoader: Fixed handle_children recursion for object hierarchies
SceneLoader: Fixed counting of asynchronously loaded objects in hierarchies
Merge remote-tracking branch 'ZuBsPaCe/dev-fix-sceneloader-hierarchy' into dev
SceneLoader clean up.
Updated test scene with the one in #3383.
Updated builds.
added NURBS curve
code clean-up
added nurbs surface
moved NURBS utility function to NURBSUtils and code clean-up
Moving NURBS code to /examples/js/curves for now.
Clean up misc uv test example.
Cleaned up NURBS examples.
NURBS examples: Proper values for nurbsKnots.
VRMLLoader: Fixed console typo.
WebGLRenderer3: Added Frustum culling.
WebGLRenderer3: Support hierarchies.
WebGLRenderer3: Clear currentBuffer and currentProgram.
Proper code for NURBS curves as per #3391.
Docs: Texture page written by @erich666.