When setting up alerts for differential logs data you might want to skip the
initial added records. counter can be used to identify if the added records
are all records from initial query of if they are new records. For initial
query results that includes all records counter will be "0". For subsequent
query executions counter will be incremented by 1. When epoch changes, counter
will be reset back to "0".
The initialization of a logger plugin was confusing. The 'init' step was
introduced to allow a daemon to buffer status events before a logger plugin
is determined by external/remote configuration. The buffered statuses could
then be transferred via a medium other than Glog (the default). To determine
if Glog should continue to write statuses to the filesystem the 'init' method
returned a Status.
Logger plugins should now use a feature method override to select how status
logs should be handled.
