Three.js

Found a small error in the Real World Use Cases of the v8 Migration Guide

The example code describing that array's must be explicit is missing the .map() closing bracket.

What it is now:

<mesh>
-  {colors.map((color, index) => <meshBasicMaterial key={index} attachArray="material" color={color}

Could you provide a working sandbox for this project on sandbox.io as an example for integration?

I don't think this is a duplicate ticket, even though it's quite an obvious feature after that cat demo at SciPy2018.

The code that selects and renders the different geos is here in the THREE.js code
https://github.com/maartenbreddels/ipyvolume/blob/master/js/src/scatter.js#L57

I don't know quite where/how to inject the mesh definition compatible with the data file of this form, but i

Creating a better admin expierence with debugging users issues and simplify troubleshoooting.

Suggestions have been outline here: mozilla/hubs#4533

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