Support Mill 0.11.0-M11 (#116)

Removed some unnecessary token readers, hence the binary
incompatibility.

Pull request: #116

build.sc

@@ -14,7 +14,7 @@ import mill.scalalib.publish._
 import de.tobiasroeser.mill.integrationtest._
 import de.tobiasroeser.mill.vcs.version._
 import com.github.lolgab.mill.mima.Mima
-import scala.util.Try
+import scala.util.{Properties, Try}
 
 val baseDir = build.millSourcePath
 
@@ -38,8 +38,8 @@ class Deps_latest(override val millVersion: String) extends Deps {
   override def mimaPreviousVersions = Seq()
 }
 object Deps_0_11 extends Deps {
-  override def millPlatform = "0.11.0-M10" // only valid for exact milestones!
-  override def millVersion = "0.11.0-M10"
+  override def millPlatform = "0.11.0-M11" // only valid for exact milestones!
+  override def millVersion = "0.11.0-M11"
   override def testWithMill = Seq(millVersion)
   override def mimaPreviousVersions = super.mimaPreviousVersions.reverse.takeWhile(_ != "0.3.0").reverse
 }
@@ -111,7 +111,11 @@ trait BaseModule extends CrossScalaModule with PublishModule with ScoverageModul
         .map(p => PathRef(millSourcePath / s"src-${p}"))
   }
 
-  override def javacOptions = Seq("-source", "1.8", "-target", "1.8", "-encoding", "UTF-8", "-deprecation")
+  override def javacOptions = {
+    (if (Properties.isJavaAtLeast(9)) Seq("--release", "8") else Seq("-source", "1.8", "-target", "1.8")) ++
+      Seq("-encoding", "UTF-8", "-deprecation")
+  }
+
   override def scalacOptions = Seq("-target:jvm-1.8", "-encoding", "UTF-8", "-deprecation")
 
   def pomSettings = T {

core/src/de/tobiasroeser/mill/vcs/version/VcsVersion.scala

@@ -104,6 +104,6 @@ trait VcsVersion extends Module {
 
 }
 
-object VcsVersion extends ExternalModule with VcsVersion with VcsVersionPlatformCompanion {
+object VcsVersion extends ExternalModule with VcsVersion {
   lazy val millDiscover = Discover[this.type]
 }