added RedirectSaveError - for failed saves if the URL is a permanent … (#93)

* added RedirectSaveError - for failed saves if the URL is a permanent redirect.

* check if url is redirect before throwing exceptions, res.url is the redirect url if redirected at all

* update tests and cli errors

waybackpy/wrapper.py

@@ -225,6 +225,7 @@ class Url:
             self.url,
             latest_version=self.latest_version,
             instance=self,
+            response=response,
         )
 
         m = re.search(