BUG: sct_straighten_spinalcord: now possible to use relative path (issue #365)
BUG: sct_straighten_spinalcord: now possible to use relative path (issue #365)

3324fr/spinalcordtoolbox,3324fr/spinalcordtoolbox,3324fr/spinalcordtoolbox,3324fr/spinalcordtoolbox,3324fr/spinalcordtoolbox,3324fr/spinalcordtoolbox,3324fr/spinalcordtoolbox