Enable -Yno-experimental in the compiler

Author: nicolasstucki

project/Build.scala

@@ -246,9 +246,6 @@ object Build {
 
     libraryDependencies += "com.novocode" % "junit-interface" % "0.11" % Test,
 
-    // TODO: enable after bootstrap
-    // scalacOptions += "-Yno-experimental",
-
     // If someone puts a source file at the root (e.g., for manual testing),
     // don't pick it up as part of any project.
     sourcesInBase := false,
@@ -448,8 +445,7 @@ object Build {
       // Add git-hash used to package the distribution to the manifest to know it in runtime and report it in REPL
       packageOptions += ManifestAttributes(("Git-Hash", VersionUtil.gitHash)),
 
-      // TODO: enable after bootstrap
-      // scalacOptions += "-Yno-experimental",
+      scalacOptions += "-Yno-experimental",
 
       javaOptions ++= {
         val managedSrcDir = {