Proof of concept: use aync_hooks

[jankapunkt]

We could start an important change, see: meteor/meteor-feature-requests#392

We would have to replace fibers with async hooks but we would then also be able to have Tracker being completely isomorphic.
https://nodejs.org/api/async_hooks.html#async_hooks_async_hooks

What do you think?

[jankapunkt]

On the client we would have to make sure it runs with async functions

[harryadel]

I'm kind of in between surely this is the direction Meteor intends to embark on or so it seems but there's no telling of the future and how they'd implement things or how it'd affect us. Plus, there's no need to burden ourselves with additional baggage. The migration to NPM isn't easy as I had hoped because of the number of packages and tests/backwards compatibility.

Let me be clear, I'm not against your suggestion per se, it's just I think it's better to delay it until we have a stable NPM implementation then we can start later on to replace fibers with async_hooks.