prepare stream once per selector and pipe results through the same stream
much better new layout for query streams
right - now I understand pull streams a bit better - we are gonna wait until each chunk is consumed before cascading onto the next chunks

tests currently passing because I've stubbed the warehouse
basic select loop completing
stupid - lets keep it simple and pre-create the streams and mount other warehouses later
one that bloody works!
simple streaming
boomshaka now we have it
full selector suite working and trim
0.0.1
even more simpler