bugfix: dont use sp_reshape on dense vectors
bugfix: dont use sp_reshape on dense vectors

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