add dequeue stat

Change-Id: I189c387429289e4f22e107038c72ae0a84d6bec1
bugfix: parser incompletion was causing queue backlog...

In some now-common situation that wasn't being triggered before,
  the HTTP parser never completed even though we received
  a successful response, which in turn exposed a bug where
  the purger would not advance through the queue in those
  conditions, resulting in a fast loop re-sending the same
  PURGE over and over and over.... This seems to fix it.

Change-Id: Ib18a086e74e971aafeb809fe84adbfecf0b5eff9
NEWS update / version bump for 0.0.8

Change-Id: Ie260a8113e20f0854ee428a345ae6b390f4e163b
Merge branch 'master' into debian

Change-Id: I28ffb665a219a136530dcaa1539a69c312e1ab1b
bump pkg version

Change-Id: I2001c2e5e891bb819970eaaaded3f14034d7b75c