Support for an aggregation query builder

[benneic]

New features in 1.00 could have better integration specifically Aggregation. A query builder and parser might be a good solution here given the nested nature of the aggregation queries. Yo @honzakral what's your thoughts on this?

[honzakral]

Unfortunately this is out of scope for this client.

That said, if I (or someone else of course!) come up with a good solution for a query builder that's flexible enough I will create a separate high-level client on top of this one.