Update tut-plugin to 0.6.11
Update tut-plugin to 0.6.11

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