--- a/.hgignore	Thu Nov 08 19:01:57 2018 +0100
+++ b/.hgignore	Thu Nov 08 19:12:42 2018 +0100
@@ -9,3 +9,4 @@
 buildinfo.properties
 .idea
 out
+.idea_modules

--- a/build.sc	Thu Nov 08 19:01:57 2018 +0100
+++ b/build.sc	Thu Nov 08 19:12:42 2018 +0100
@@ -7,6 +7,7 @@
 import mill.scalajslib._
 import mill.scalalib._
 import mill.scalalib.publish._
+import mill.util.Loose
 
 import scala.sys
 
@@ -56,7 +57,7 @@
 }
 
 object jvm extends Common {
-  override def scalacPluginIvyDeps = super.scalacPluginIvyDeps() ++ Agg(
+  override def scalacPluginIvyDeps: Target[Loose.Agg[Dep]] = super.scalacPluginIvyDeps() ++ Agg(
     ivy"org.scalamacros:::paradise:2.1.0"
   )
 
@@ -65,7 +66,8 @@
     ivy"de.heikoseeberger::akka-http-json4s:1.22.0",
     ivy"com.typesafe.akka::akka-slf4j:$akkaVer",
     ivy"org.json4s::json4s-native:3.6.2",
-    ivy"ch.qos.logback:logback-classic:1.2.3"
+    ivy"ch.qos.logback:logback-classic:1.2.3",
+    ivy"com.lihaoyi::scalatags:0.6.7"
   )
 
   override def scalacOptions = T{super.scalacOptions.map(_ :+