moving more stuff into util
rename var
grouping chans, go-ified.
go-ified the puller (input)
go-ified threads in failed and gatherer.
go-thread-ified requester
go-ifying plumbing.
use with-open in admitter
reporter: don't use ':or' in 'match'
gather state and output to stdout.
send pending requests to failure sink
use timeout, not Thread/sleep
added fowles.scrape
formatting
added scrape servers.  config is not 'example'.
add 'concurrency' config
merged w/ master
Merge pull request #10 from marklar/go-threads

Stoppable, recording state.  Added "scrape" worker (for PTK).