some sanity checks on time-dependence format specifications
some sanity checks on time-dependence format specifications

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