* fixed and wrote test for lambda and function as arg case

* added license to userlib tests
* added map impl to userlib
* userlib tests now run and pass
* all args are evaluated individually

tests/test_func.rs

@@ -252,7 +252,7 @@ mod func_tests {
             syms.call_symbol(&"test_func_in".to_string(), &args, true)
                 .err()
                 .unwrap(),
-            "error in call to undefined-symbol: undefined symbol: undefined-symbol".to_string(),
+            "error evaluating args: undefined symbol: undefined-symbol".to_string(),
         );
     }
 }