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- the broker exits if there's already a valid broker running in the socket.
- powerhose-broker gained 2 new options: --check and --purge-ghosts
- implemented timeout_max_overflow in the client.
- the stacks are dumped on worker timeouts
- now using delayed callbacks for the heartbeat
- make sure execution errors are properly transmited and raised.
- fixed the pool of connectors - so every connector is correctly freed
- now workers can get extra options from the command-line
- initial release.