[feature request] add ply support

[flixr]

It would be great if ply would be supported as well. There seems to be a loader in threejs:

• https://github.com/mrdoob/three.js/blob/master/examples/webgl_loader_ply.html
• https://github.com/mrdoob/three.js/blob/master/examples/jsm/loaders/PLYLoader.js

[v1r0x]

As long as there's already a loader in threejs, it's fairly easy to add to the next release :wink:

[v1r0x]

Fixed via #29 in v0.3.3 (should be available in the appstore in a couple of hours)

[flixr]

Thx!