TEST: Windows compatibility

tests/conftest.py

tests/test_dtifit.py

tests/test_ensure.py

tests/test_featimage.py

tests/test_freesurfer.py

tests/test_fsl_utils_path.py

tests/test_idle.py

tests/test_image.py

tests/test_immv_imcp.py

tests/test_melodicanalysis.py

tests/test_melodicimage.py

tests/test_parse_data.py

tests/test_run.py

tests/test_settings.py

tests/test_wrapperutils.py