Initial data commit

Task/Scope-modifiers/Wren/scope-modifiers.wren

@@ -0,0 +1,10 @@
+class MyClass {
+    construct new(a) {
+        _a = a // creates an instance field _a automatically
+    }
+    a { _a } // allow public access to the field
+}
+
+var mc = MyClass.new(3)
+System.print(mc.a)  // fine
+System.print(mc._a) // can't access _a directly as its private to the class