Merge pull request scala#112 from SethTisue/version-bumps

allow JDK 10 & 11, drop Scala 2.13, bump 2.12.4 -> 2.12.6

Author: SethTisue

build.sbt

@@ -7,11 +7,13 @@ name    := "scala-partest"
 version := "1.1.4-SNAPSHOT"
 
 scalaVersionsByJvm in ThisBuild := {
-  val vs = List("2.12.4", "2.13.0-M3")
+  val vs = List("2.12.6")
 
   Map(
     8 -> vs.map(_ -> true),
-    9 -> vs.map(_ -> false))
+    9 -> vs.map(_ -> false),
+    10 -> vs.map(_ -> false),
+    11 -> vs.map(_ -> false))
 }
 
 scalaXmlVersion := "1.0.6"