* remove settings duplication between AkkaBuild and project specific .sbt files
* do not publish test projects
* run akka-http-core tests
* fix lambda sample project versions
* remove obsolete projects (streamAndHttp, httpParent, docsDev)
* exclude parsing project from unidoc
* update to the latest sbt
* addunidoc task via an AutoPlugin that depends on PrValidation and Unidoc autoplugins
* separate cli option logic to a case class
* remove autoplugin for root project