Bump version to v0.6.0

Author: retronym

build.sbt

@@ -10,7 +10,7 @@ organization := "org.scala-lang.modules"
 
 name := "scala-java8-compat"
 
-version := "0.5.0-SNAPSHOT"
+version := "0.6.0-SNAPSHOT"
 
 // important!! must come here (why?)
 scalaModuleOsgiSettings