Attempt at BIDS multisession support.
Attempt at BIDS multisession support.

New function to tokenize the image (.nii.gz) files in a BIDS dataset.
mriqcp uses it to get the subject, session, run, task, modality info
to break data into subject, session, task+run for each modality
(T1w and bold). aqc and rec are also available.

Taking it for a texas-style spin and see how to goes.

oesteban/mriqc,poldracklab/mriqc,poldracklab/mriqc,poldracklab/mriqc,oesteban/mriqc,oesteban/mriqc,poldracklab/mriqc,oesteban/mriqc