Support new mongo driver v4

[renanccastro]

Hello!
On Meteor 2.6 we are introducing support for the new node.js mongo driver, v4.x, and the aggregate function doesn't require a callback anymore, only the toArray function does.

[edwardupton]

+1 to merge this in

[dokithonon]

+1 for me too. Please merge it.

[RomainSennat]

Same for me.

[sakulstra]

Hay, is anyone up to taking over this package? @renanccastro , @edwardupton, @dokithonon, @RomainSennat
It's not that hard to maintain, but I've left the meteor ecosystem at least 3 years ago 😅
Wasn't there some effort to create a community org or sth similar to move this pacakges to? I can't remember.

[sakulstra]

sorry no idea how to publish this any more... managed to recover my password & install meteor, but seems like there's issues with the package.js and i have no idea how to resolve them (first Unknown release METEOR@1, changed that to a more up to date version, just to have errors with accounts-password version) ... if someone manages to create a pr with a package.js that allowed me releasing this i'm happy to do so. If not please go ahead and fork the repo.

[renanccastro]

hi @sakulstra, thanks for chiming in.

That's fine. if you are willing to transfer the package ownership, we as Meteor Software can take it.

I will publish the new version in your namespace. Thanks for your work here!

[renanccastro]

The new repo will be forked under Meteor Compat organization.

[sakulstra]

@renanccastro sounds good to me 🎉 let me know if/where i have to do sth to give you ownership of my handle.