diff -r 1c61329ae07a -r 32b2c5320657 build.sbt
--- a/build.sbt	Tue Nov 21 15:57:25 2017 +0100
+++ b/build.sbt	Mon Nov 27 18:05:35 2017 +0100
@@ -1,6 +1,8 @@
 import sbt.Project.project
 
-lazy val root = project.in(file(".")).
+crossScalaVersions := Seq("2.11.12", "2.12.4")
+
+lazy val ngtagsRoot = project.in(file(".")).
   aggregate(ngtagsJS, ngtagsJVM, radarChart).
   settings(
     publish := {},
@@ -10,7 +12,14 @@
 lazy val buildSettings = Seq(
   organization := "net.tz",
   name := "ngTags",
-  scalaVersion := "2.11.8",
+  scalaVersion := "2.11.12",
+    scalacOptions ++= Seq(
+    "-feature", "-deprecation", "-unchecked",
+    "-language:implicitConversions", "-language:reflectiveCalls",
+    "-language:postfixOps"
+  ),
+  javacOptions ++= Seq(
+    "-encoding", "UTF-8", "-Xlint:deprecation", "-Xlint:unchecked"),
   licenses += ("Apache-2.0", url("http://opensource.org/licenses/Apache-2.0"))
 )
 
@@ -19,7 +28,7 @@
 settings(buildSettings:_*).
 settings(
   libraryDependencies ++= Seq(
-    "com.lihaoyi" %%% "scalatags" % "0.6.0"
+    "com.lihaoyi" %%% "scalatags" % "0.6.7"
     //"com.github.japgolly.scalacss" %%% "ext-scalatags" % "0.1.0"
   ),