OPT: now works for list options (parser)
OPT: now works for list options (parser)

Former-commit-id: bdfaaec8045589a3405b2082283ef9740d3253ed [formerly 12819422a22f51eba6a9421f2feab21b1671fab5]
Former-commit-id: dc62bb1fe1ec7271cf2a2b20834c196171629503
Former-commit-id: c481b2cb09991694c1b6cab57fa418596f396b11
neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox