group constant terms in the liouvillian before invoking the ode solver
group constant terms in the liouvillian before invoking the ode solver

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