add javacOptions

Author: pomadchin

build.sbt

@@ -24,6 +24,7 @@ lazy val commonSettings = Seq(
     "-feature",
     "-target:jvm-1.8"
   ),
+  javacOptions ++= Seq("-source", "1.8", "-target", "1.8"),
   shellPrompt := { s => Project.extract(s).currentProject.id + " > " },
   Test / publishArtifact := false,
   developers := List(

project/Dependencies.scala

@@ -1,7 +1,7 @@
 import sbt._
 import sbt.Keys._
 
-import de.heikoseeberger.sbtheader.{CommentCreator, CommentStyle, FileType}
+import de.heikoseeberger.sbtheader.{CommentStyle, FileType}
 import de.heikoseeberger.sbtheader.HeaderPlugin.autoImport.{headerLicense, headerMappings, HeaderLicense}
 
 object Version {