REF: added get_parser() function
REF: added get_parser() function

Former-commit-id: 9706104d4a23ef68bea367d27b7962a3e3c17bb2 [formerly 2183b8e867d529d691153ba8d0051949c25b6362]
Former-commit-id: c591428aa33d4def7645a85f6c67a96c1f5405b4
Former-commit-id: e75008c9d1878648b8132fb3b69498caf72794a5
neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox