* Async proxy pool
* Async proxy pool
* Late upstream initialization and exception guards
* Close upstream proxy connection on client connection close
* Refactor into EventManager
* Fix tests accounting in the event manager
* Ensure each process initializes logger
* pragma no cover
* Teardown connection when proxy pool upstream proxy closes
* Add ability to customize access log format and add additional context to it
* Maintain total size for response bytes in access logs
* Fix tests broken due to new plugin methods missing mock
* Update pubsub_eventing to use EventManager to avoid entire bootstrapping step
* Go flagless to allow custom user defined flags. Fixes#301
* Add --cache-dir flag for cache plugin (when used with on-disk store)
* Enable discovery of flags from external plugins, example those that reside outside of proxy.py package and loaded on demand. This also allows external flags to surface in --help section
* Define --filtered-client-ips flag for FilterByClientIpPlugin
Sviatoslav Sydorenko