Feature Request for Async Query Support

Hi!

I have a use case that would greatly benefit from async query support, perhaps added as additional functionality to the connection interface.
For example, introducing a function that will kick off a query and return an object containing QueryExecutionId, then another function that may use that object to poll for query completion, and another for cancelling that query, etc.

If any thought has been given to this I'd love to know.
Thanks!