A first test of the dqe
Corrected makefile.
Split out the query engine.
Generalized dflow components further.
Query optimisation for double parts.
Fixed problem with multipe start messages arriving simultanious.
Only print id for debug.
Improvements on config and paralell queries.
Added backpreasure to the dflow.
Made get chunk size configurable.
Readded missing config option.
Deal with empty returns.
dont't timeout on dflow emits.
Tree like mget calculation.
Allow for serializing dqe queries.
More generalisation for the dflow application.
Support for describing and plotting flows.
Switched to dqe for query execution.
using dqe schema