tweak: Recover from any panics in trace streams. #149
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This will ensure that panics in the tracer/decoder don't cause the entire node to restart. But no notification of the failure is indicated to the client, so it will simply stop seeing messages until it times out and reconnects on its own. A future improvement would be one of either sending the client a message telling it to reconnect or attempting to reconstruct a new go-routine transparently.