update sbt build

Author: SethTisue

build.sbt

@@ -1,12 +1,14 @@
 name := "utest"
 organization := "com.lihaoyi"
-scalaVersion := "2.13.4"
+scalaVersion := "2.13.6"
 libraryDependencies += "org.portable-scala" %% "portable-scala-reflect" % "0.1.0"
 libraryDependencies += "org.scala-sbt" % "test-interface" % "1.0"
 testFrameworks += new TestFramework("test.utest.CustomFramework")
 Compile / unmanagedSourceDirectories += baseDirectory.value / "utest" / "src"
+Compile / unmanagedSourceDirectories += baseDirectory.value / "utest" / "src-2"
 Compile / unmanagedSourceDirectories += baseDirectory.value / "utest" / "src-2.13"
 Compile / unmanagedSourceDirectories += baseDirectory.value / "utest" / "jvm" / "src"
+Compile / unmanagedSourceDirectories += baseDirectory.value / "utest" / "jvm" / "src-2"
 Test / unmanagedSourceDirectories += baseDirectory.value / "utest" / "jvm" / "test" / "src"
 Test / unmanagedSourceDirectories += baseDirectory.value / "utest" / "test" / "src"
-Test / unmanagedSourceDirectories += baseDirectory.value / "utest" / "test" / "src-2.13"
+Test / unmanagedSourceDirectories += baseDirectory.value / "utest" / "test" / "src-2"