Usual mypy workaround

ltworf/typedload#132

python/mypy#9003

Author: ltworf

relational/relation.py

@@ -89,7 +89,7 @@ def load(filename: Union[str, Path]) -> 'Relation':
             for row in loaded['content']:
                 if len(row) != len(header):
                     raise ValueError(f'Line {row} contains an incorrect amount of values')
-                t_row: Tuple[Optional[Union[int, float, str, Rdate]], ...] = load(row, Tuple[Optional[Union[int, float, str, Rdate]], ...])
+                t_row: Tuple[Optional[Union[int, float, str, Rdate]], ...] = load(row, Tuple[Optional[Union[int, float, str, Rdate]], ...])  # type: ignore
                 content.append(t_row)
             return Relation(header, frozenset(content))