added empty matlab_info array if --qutip-only is used
added empty matlab_info array if --qutip-only is used

zasdfgbnm/qutip,cgranade/qutip,qutip/qutip,zasdfgbnm/qutip,cgranade/qutip,qutip/qutip,anubhavvardhan/qutip,anubhavvardhan/qutip