QueryRef missing from core/src/lib/index.ts

[Honga1]

What

It seems like QueryRef is missing from https://github.com/dustinlacewell/react-ecs/blob/master/libs/core/src/lib/index.ts

Thus I cannot include it from the built javascript files.

Why it's needed

I found perhaps another related issue with useQuery. It does not disconnect queries on the unmount of the hosting component. In a fix I made for this issue I needed access to the QueryRef constructor. Should this related issue I'll create another ticket for this error with a repro.

[dustinlacewell]

Great. I'm ramping up for a new job, so any help you can provide with PRs, I'll be happy to review.

[bvkimball]

Any chance we can get the latest published to npm?