* Build docker from 3.10-alpine
* Bump version to 3.4.0
* Add instructions for how to run dashboard
* Order of menu
* Override dashboard png path until submitted
* Add some doc string for top-level Proxy class. Also some TODOs and warnings regarding PID file overwrite
* Allow HttpProxyBasePlugin implementations to register custom descriptors for read/write events
* Remove hardcoded adblock regex into json config. Update upstream filter to block facebook, not google
* ProxyPoolPlugin and ReverseProxyPlugin must now be updated to use get/read/write descriptor APIs
* Add get/read/write descriptor API for HttpWebServerBasePlugin too
* Surface actual listening port via flags.port