allow list of operators in expect, so that result.expect also can be calculated from a list of states as expect(e_ops, result.states)
allow list of operators in expect, so that result.expect also can be calculated from a list of states as expect(e_ops, result.states)

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