F deprecate getusername

src/linkahead/connection/connection.py

@@ -757,6 +757,8 @@ class _Connection(object):  # pylint: disable=useless-object-inheritance
 
         Shortcut for: get_connection()._authenticator._credentials_provider.username
         """
+        warnings.warn("Deprecated. Please use ``la.Info().user_info.name`` instead.",
+                      DeprecationWarning)
         if self._authenticator is None:
             raise ValueError(
                 "No authenticator set. Please call configure_connection() first.")