parse aggregations and group by's that were performed

[francisdb]

@thomastoye can you please document the issue you mentioned on friday?

Feel free to fix it or point me to the solution :-)

[thomastoye]

Have little time now, but when querying KairosDB, the response contains aggregations and group by's that were performed (in essence, the same ones as in the request). Currently, this library doesn't parse them. I've got a failing test case somewhere, will look into creating a PR but may take some time.

[francisdb]

Thanks, a pointer should be enough.