fix #28 basic map supports (still no iterators)

lynglib/src/jvmTest/kotlin/BookTest.kt

@@ -260,6 +260,11 @@ class BookTest {
         runDocTests("../docs/Set.md")
     }
 
+    @Test
+    fun testMap() = runTest {
+        runDocTests("../docs/Map.md")
+    }
+
     @Test
     fun testSampleBooks() = runTest {
         for (bt in Files.list(Paths.get("../docs/samples")).toList()) {