Switch to using MetricPublisher in MetricManager instead of subclassing Publisher. Still needs more tests.
Switch to using MetricPublisher in MetricManager instead of subclassing Publisher. Still needs more tests.

harrissoerja/vumi,vishwaprakashmishra/xmatrix,vishwaprakashmishra/xmatrix,TouK/vumi,harrissoerja/vumi,TouK/vumi,harrissoerja/vumi,TouK/vumi,vishwaprakashmishra/xmatrix