[535] Implement basic support for GenQuery2

[stsnel]

Here's a draft for an initial version of GenQuery2 support (issue 535)

[korydraughn]

Thanks for the contribution. We'll review and share our thoughts.

[alanking]

I had a few suggestions/comments. I would have suggested adding more tests, but the existing tests basically exercise the interface in this client, so I don't think it would add anything beyond just testing the API (which we do plenty of in the main repo).

Nice work!

[stsnel]

I had a few suggestions/comments. I would have suggested adding more tests, but the existing tests basically exercise the interface in this client, so I don't think it would add anything beyond just testing the API (which we do plenty of in the main repo).

Nice work!

Thank you for the feedback!

[korydraughn]

Looks good to me.

Let's get an approval from @alanking and @d-w-moore before adding the pound.

[alanking]

Yes, let's make sure @d-w-moore is okay with it and I think we'll be good to go.

[d-w-moore]

Nice work!