ref #67: timeout thread if hung
ref #77: fix sfv bugs
fix #79: fix bug that would prevent passworded releases from being deleted
include pip -r in update.sh to grab new requirements
make nntplib return an empty list of overviews instead of an exception in the event that no overview was available
ref #80: implemented missing part checking, disabled by default
clean up scan returns
ref #80: new scan branch with fix for delayed indexing
fix a couple of typos
ref #80: add a couple of debug lines
ref #80: delete missed messages after they've been collected
ref #80: missed a filter
ref #80: missing part improvements
fix an error with catching thread timeouts
ref #80: scanning improvements
fix a couple of log lines
ref #80: rewrite update/backfill into scan function
ref #80: minor bugfix: was collecting 1 extra message per iteration
ref #80: fix new group scan
ref #80: remove debug values