`nemar_subject_template` is not flexible enough. In BIDS, the subject label can be any string: https://bids-specification.readthedocs.io/en/stable/glossary.html#subject-entities

[bruAristimunha]

nemar_subject_template is not flexible enough. In BIDS, the subject label can be any string: https://bids-specification.readthedocs.io/en/stable/glossary.html#subject-entities
Do we really need nemar_subject_template? Can't we so something smarter to automatically infer the mapping?
The simplest solution would be if subjects in moabb were also strings and not ints.

Originally posted by @PierreGtch in #1085 (comment)