Merge pull request #113 from eire1130/develop

 Removed deprecated find_loader in favor of find_spec and removed py33 support as a result

src/wrapt/importer.py

@@ -189,16 +189,18 @@ def find_module(self, fullname, path=None):
 
         try:
             if PY3:
-                # For Python 3 we need to use find_loader() from
-                # the importlib module. It doesn't actually
+                # For Python 3 we need to use find_spec().loader
+                # from the importlib.util module. It doesn't actually
                 # import the target module and only finds the
                 # loader. If a loader is found, we need to return
                 # our own loader which will then in turn call the
                 # real loader to import the module and invoke the
                 # post import hooks.
-
-                loader = importlib.find_loader(fullname, path)
-
+                try:
+                    import importlib.util
+                    loader = importlib.util.find_spec(fullname).loader
+                except (ImportError, AttributeError):
+                    loader = importlib.find_loader(fullname, path)
                 if loader:
                     return _ImportHookChainedLoader(loader)