Editor: Saving to localStorage one second after the last cameraChanged event.
Editor: Simplified Helpers code.
Updated WebGlRenderer render Method Documentation

The WebGlRenderer.render's forceClear argument forces a
clear -only- for buffers with their .autoClear property is set to true.

Took me a while to find a bug in my code as I didn't understand
these flags overode the forceClear parameter for WebGlRenderer.render
OBJLoader: Implemented support for negative indices.
@algrs ok, I think I managed to get it to work now. I’m keeping a vertices array to map indices per object.
GeometryExporter: Considering the engine doesn’t support quads anymore, the isTriangle code is now dead.
Merge branch 'dev' of https://github.com/gazliddon/three.js into dev
Controls: Adding keydown/keyup events listener to window. Fixes #4311 and #4327.