unbound operate method signature docs.
let's ship a config file with generous retries.
Attempt to store DNS record in cache
update docs to reflect cachiness.
Revert "let's ship a config file with generous retries."

This reverts commit 6e2727c1626b76b34ceff2e5710dc18a38a2c504.
use a regular hostname
central logger. unalias name
automated tests.
cleanup
decompose unbound state
tests working.
tests showing proper failures.
Merge remote-tracking branch 'origin/master'

Conflicts:
	unbound_ec2.py
move util method to end.
it's a work and not a word.
Merge branch 'caching'

Conflicts:
	unbound_ec2.py
clean up.
WIP pqueue
WIP invalidator scheduler.
caching and recording requests.