* provide a global `on_delivery` callback in the `Producer()` config dict better for memory consumptions vs per message callback.
0.1.4
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* make `send` more robust
0.1.3
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* catch `UnicodeEncodeError` in `send()`
0.1.2
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* catch `UnicodeDecodeError` in delivery callback as it can be thrown by `err.str()`
0.1.1
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* add util to produce syslog messages in `tools` sub-folder * remove useless `KeyboardInterrupt` * reduce timeout of `flush()` from 30 to 5 seconds * more tests