Output plugin is unreliable/at most once

[barryhatfield]

A recent update to the plugin changed the producer from sync to async. This has changed the default behavior of the output plugin to be unreliable, but faster.

This should be a configuration option, and the default should be a reliable producer unless chosen otherwise.

link to the change:

d391f5b

[Andyandpandy]

Added config as requested. For transparency: #31