Publish only to latest Scala version

Author: kiritsuku

build.sbt

@@ -3,7 +3,7 @@ version := "0.14.0-SNAPSHOT"
 scalaVersion := "2.12.3"
 moduleName := name.value
 organization := "org.scala-refactoring"
-crossScalaVersions := Seq("2.10.6", "2.11.8", "2.12.2", "2.12.3")
+crossScalaVersions := Seq("2.10.6", "2.11.8", scalaVersion.value)
 crossVersion := CrossVersion.full
 fork := true
 parallelExecution in Test := false