Async import in editor not suported

[sam-apparance]

Just a note to bring awareness that the asyc loading support that was added only works during play, and not in editor mode. Seems that Unity's coroutines only work in play mode and aren't supported in editor mode. Looks like there are a few alternatives and even an official editor coroutines replacement, but this means it needs explicit support.
I was trying to use this to augment some tooling work I was doing, but had to give up on editor support and will be investigating alternative loaders.
No expectation, or shade on this library, just a FYI :)