prepare to release cwl-utils v0.38

Author: mr-c

cwl_utils/__meta__.py

@@ -1,3 +1,3 @@
 # SPDX-License-Identifier: Apache-2.0
 """Global version number for the cwl_utils package."""
-__version__ = "0.37"
+__version__ = "0.38"

tests/test_graph_split.py

@@ -1,18 +1,17 @@
 # SPDX-License-Identifier: Apache-2.0
 """Test the CWL $graph document splitter tool."""
-from io import StringIO
 import json
+from io import StringIO
 from pathlib import Path
 
 import pytest
 import requests
+from cwltool.tests.util import get_main_output
 
 from cwl_utils.graph_split import graph_split
 
 from .util import get_path
 
-from cwltool.tests.util import get_main_output
-
 URI = (
     "https://gist.githubusercontent.com/altairwei/"
     "6a0097db95cad23de36f825ed3b9f4b0/raw/"