Filter out phase, real, and imaginary data in collect_data

[tsalo]

BIDS has recently added a new entity, part, to indicate the part of the complex signal an MRI file corresponds to (see bids-standard/bids-specification#424). The default is magnitude, so files without the entity can be assumed to be useable (along with part-mag), but files with values of part-imag, part-real, and part-phase should be filtered out at data collection.

This new change also deprecated the phase suffix for phase fMRI data, and instead recommends using part-phase with the bold suffix, so this has the possibility of causing problems for both single-band reference images and BOLD files.

A minor note: The specification has not had a release since the part entity was added, but that will likely happen within the next month or so, so I thought it would be best to raise an issue here earlier rather than later.

[tsalo]

Perhaps this could be done simply at the following location.

niworkflows/niworkflows/utils/bids.py

Lines 168 to 176 in 6488ef7

	queries = {
	"fmap": {"datatype": "fmap"},
	"bold": {"datatype": "func", "suffix": "bold"},
	"sbref": {"datatype": "func", "suffix": "sbref"},
	"flair": {"datatype": "anat", "suffix": "FLAIR"},
	"t2w": {"datatype": "anat", "suffix": "T2w"},
	"t1w": {"datatype": "anat", "suffix": "T1w"},
	"roi": {"datatype": "anat", "suffix": "roi"},
	}

The change could be the following, although I'm not 100% sure. Thanks to @effigies for the recommendation!

queries = {
        "fmap": {"datatype": "fmap", "part": ["mag", None]},
        "bold": {"datatype": "func", "suffix": "bold", "part": ["mag", None]},
        "sbref": {"datatype": "func", "suffix": "sbref", "part": ["mag", None]},
        "flair": {"datatype": "anat", "suffix": "FLAIR", "part": ["mag", None]},
        "t2w": {"datatype": "anat", "suffix": "T2w", "part": ["mag", None]},
        "t1w": {"datatype": "anat", "suffix": "T1w", "part": ["mag", None]},
        "roi": {"datatype": "anat", "suffix": "roi"},
    }

[tsalo]

I think #594 should have closed this.