Pass kwargs through task to get_dataset (#1345)

* Pass kwargs through task to ```get_dataset```

Allows to follow the directions in the warning ```Starting from Version 0.15 `download_data`, `download_qualities`, and `download_features_meta_data` will all be ``False`` instead of ``True`` by default to enable lazy loading.```

* docs: explain that ```task.get_dataset``` passes kwargs

* Update openml/tasks/task.py

Remove Py3.8+ feature for backwards compatibility

---------

Co-authored-by: Pieter Gijsbers <[email protected]>

Author: knyazer

openml/tasks/task.py

@@ -145,9 +145,12 @@ def _get_repr_body_fields(self) -> Sequence[tuple[str, str | int | list[str]]]:
         ]
         return [(key, fields[key]) for key in order if key in fields]
 
-    def get_dataset(self) -> datasets.OpenMLDataset:
-        """Download dataset associated with task."""
-        return datasets.get_dataset(self.dataset_id)
+    def get_dataset(self, **kwargs) -> datasets.OpenMLDataset:
+        """Download dataset associated with task.
+
+        Accepts the same keyword arguments as the `openml.datasets.get_dataset`.
+        """
+        return datasets.get_dataset(self.dataset_id, **kwargs)
 
     def get_train_test_split_indices(
         self,