with bar plots, make sure we start at at least zero. made fig instance an optional argument
with bar plots, make sure we start at at least zero. made fig instance an optional argument

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