Add __eq__ and __hash__ to NamedUser (#706)

* Add __eq__ and __hash__ to NamedUser

* Remove extra outer brackets from __eq__ in NamedUser

* Add unit tests for __eq__ and __hash__

* Remove redundant brackets in __eq__ : NamedUser

github/NamedUser.py

@@ -46,6 +46,12 @@ class NamedUser(github.GithubObject.CompletableGithubObject):
     def __repr__(self):
         return self.get__repr__({"login": self._login.value})
 
+    def __hash__(self):
+        return hash((self.id, self.login))
+
+    def __eq__(self, other):
+        return isinstance(other, type(self)) and self.login == other.login and self.id == other.id
+
     @property
     def avatar_url(self):
         """