Update sbt to 1.1.6
Update sbt to 1.1.6

aeons/http4s,aeons/http4s,aeons/http4s,http4s/http4s,rossabaker/http4s,rossabaker/http4s,ChristopherDavenport/http4s,ChristopherDavenport/http4s,ChristopherDavenport/http4s