example 20 no longer uses old odesolver
example 20 no longer uses old odesolver

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