This issue is for reviewing changes in the now local branch "schemaAdditions" - https://github.com/yip/engine/tree/schemaAdditions (originally from #3)

The Aggregation engine should have an API to consume from the Core in order to get the raw data. I don't think there's much left to the imagination here - the only thing that comes to my mind at present, being that I don't remember exactly the rationale for not allowing the Aggregation to interrogate the database directly.

Anyway, I think we can agree on a GET call to obtain reports that satisfy given criteria, i.e.:

/reports/tags/[tag or list of tags]
/reports/[report slug]
/reports/location/[coordinates, radius]
/reports/time/[timestamp, time range]

Would that be suitable? Or we can use streams and just initialise the stream with the required criteria, using always the same endpoint.