Release 1.8.5 - 2020/11/24

	* in_prometheus_monitor: Support USR2 reload

Release 1.8.4 - 2020/09/24

	* in_prometheus_output_monitor: Add gauge_all parameter

Release 1.8.3 - 2020/08/24

	* Fix resourcr leak in async-http based server

Release 1.8.2 - 2020/07/17

	* in_prometheus_output_monitor/in_prometheus_tail_monitor: Support USR2 reload

Release 1.8.1 - 2020/07/06

	* Fix aggregate bug with async-http

Release 1.8.0 - 2020/04/17

	* Use http_server helper
	* Require fluentd v1.9.1 or later


For older releases, see commits on github repository.
