fixed bugs in sesolve._generic_ode_solve, also use 1d arrays instead 2d arrays for vectors
fixed bugs in sesolve._generic_ode_solve, also use 1d arrays instead 2d arrays for vectors

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