Previously we assumed that the header of a ply file had to end with

    end_header\n

but it is there are systems that write the end as

    end_header\r\n

This previously left the rest of the file read off by one byte.

Fixes issue 14937

- Original Repo Issue 47: Fixed incorrect vertex color pointerC initialization (omitting first set of values)
- Original Repo Pull Request 46: It is now possible to run `THREE.OBJLoader2` in nodejs 10.5.0+. Thanks to @Cobertos
- Replaced Singletons with pure function/prototype definitions (backport from dev (V3.0.0)). Reason: Counter issues with worker code Blob generation from minified code base (e.g when using webpack)
- #12942: Align `setPath` and `setResourcePath` meaning and handling