Do not have final methods in Struct, functions may need to be overridden

lib/Observer.php

@@ -132,6 +132,8 @@ class Observer {
         }
 
         if ($this->resolved) {
+        	--$this->position;
+
             if ($this->exception) {
                 return new Failure($this->exception);
             }

lib/Struct.php

@@ -15,13 +15,13 @@ trait Struct {
      */
     private $__propertySuggestThreshold = 70;
 
-    final public function __get($property) {
+    public function __get($property) {
         throw new \Error(
             $this->generateStructPropertyError($property)
         );
     }
 
-    final public function __set($property, $value) {
+    public function __set($property, $value) {
         throw new \Error(
             $this->generateStructPropertyError($property)
         );