adding status
clearing locks during cleanup
Merge pull request #28 from narkisr/status-clean

Message queue fixes, add message queue `status` fn (narkisr)
Housekeeping for narkisr/status-clean merge
Add Listener java.io.Closeable implementation

Enables `with-open`, etc.
`make-conn-spec` timeout arg is now called `:timeout-ms` for clarity (backwards compatible)
Housekeeping
Message queue: add handler-fn interpretable return TODO
Bump Clojure 1.5 test dependency (1.5.1)
Merge branch 'dev'
BUmp version (1.8.0)
enabling queue cleanup