Backport LazyList (#290)

* Backport LazyList

* Move GC test to JVM only.

Author: NthPortal

build.sbt

@@ -74,7 +74,8 @@ lazy val compat = MultiScalaCrossProject(JSPlatform, JVMPlatform, NativePlatform
         val sharedSourceDir = (baseDirectory in ThisBuild).value / "compat/src/main"
         if (scalaVersion.value.startsWith("2.13.")) sharedSourceDir / "scala-2.13"
         else sharedSourceDir / "scala-2.11_2.12"
-      }
+      },
+      Test / sourceDirectories += (ThisBuild / baseDirectory).value / "compat/src/test/scala-jvm"
     )
     .jvmSettings(
       OsgiKeys.exportPackage := {