Merge pull request #714 from typelevel/update/auxlib-0.5.9

Author: rossabaker

project/plugins.sbt

@@ -2,4 +2,4 @@ addSbtPlugin("org.typelevel" % "sbt-typelevel" % "0.8.2")
 addSbtPlugin("pl.project13.scala" % "sbt-jmh" % "0.4.8")
 addSbtPlugin("org.scala-js" % "sbt-scalajs" % "1.20.1")
 addSbtPlugin("org.portable-scala" % "sbt-scala-native-crossproject" % "1.3.2")
-addSbtPlugin("org.scala-native" % "sbt-scala-native" % "0.5.8")
+addSbtPlugin("org.scala-native" % "sbt-scala-native" % "0.5.9")