Merge pull request #60 from scala-steward/update/sbt-mima-plugin-0.4.0

Update sbt-mima-plugin to 0.4.0

Author: SethTisue

build.sbt

@@ -8,4 +8,4 @@ organization        := "org.scala-lang.modules"
 licenses            := Seq(("Apache-2.0", url("https://www.apache.org/licenses/LICENSE-2.0")))
 
 addSbtPlugin("com.typesafe.sbt" % "sbt-osgi" % "0.9.5")
-addSbtPlugin("com.typesafe" % "sbt-mima-plugin" % "0.3.0")
+addSbtPlugin("com.typesafe" % "sbt-mima-plugin" % "0.4.0")