fix issue with random number seeding in subprocesses
fix issue with random number seeding in subprocesses

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