Merge pull request #825 from typelevel/update/sbt-typelevel-0.8.6

Update sbt-typelevel, sbt-typelevel-site to 0.8.6

Author: milessabin

project/plugins.sbt

@@ -1,5 +1,5 @@
-addSbtPlugin("org.typelevel"             % "sbt-typelevel"                 % "0.8.5")
-addSbtPlugin("org.typelevel"             % "sbt-typelevel-site"            % "0.8.5")
+addSbtPlugin("org.typelevel"             % "sbt-typelevel"                 % "0.8.6")
+addSbtPlugin("org.typelevel"             % "sbt-typelevel-site"            % "0.8.6")
 addSbtPlugin("io.spray"                  % "sbt-revolver"                  % "0.10.0")
 addSbtPlugin("com.timushev.sbt"          % "sbt-updates"                   % "0.6.4")
 addSbtPlugin("pl.project13.scala"        % "sbt-jmh"                       % "0.4.8")