BROKEN: Attempt #1 at modular serailization for aggregates.
Avro aggregate serialization made more flexible.
Merge branch 'avro'
Implicit row/col avro aggregate serialization.
Merge branch 'avro'
Updated schemas with meta-data spot and Z
Merge branch 'python'
Draft drawing-the-dark.
Working 'draw the dark' transfer
Drawing the dark made more robust
Server infrastructure:  Basic server, types threaded throughout, test cases.
Server Renderer creeping closer to completeion.
WIP: Making transfer for generic in renderer -- core shifted and paramterized.
Renderer 'transfer' generalized for multiple transfers.
Working AR server
Name shennanegans
Name shennanegans, part 2
Imporved build system. Better ARServer execution options.