fix #85 lynon empty list encoding

lynglib/src/commonTest/kotlin/ScriptTest.kt

@@ -4013,6 +4013,13 @@ class ScriptTest {
         assertEquals( TestJson4(TestEnum.One), x)
     }
 
+    @Test
+    fun testStringLast() = runTest {
+        eval("""
+            assertEquals('t', "assert".last())  
+        """.trimIndent())
+    }
+
     @Test
     fun testLogicalNot() = runTest {
         eval("""