lower gig requirements to 1, test works fine.
TCP errors simplified; TCP timeline recording simplified
Keep pre-parsed ctrl byte around for priority calls
Very long file names are rejected; use a tighter encoding

Use a tighter filename encoding; assert for a true bi-jection of Key<->String.
Fix bug with wrong name on lazy_array_chunk.
Missing type
Clean up comments
Lots of minor cleanups
Add F/J thread pools for all priority levels.

Add F/J pools for all priority levels.  Threads from low-priority queues
will attempt to drain hi-priority queues first.