FIXED: ALL Bloch3d vector not normalized to unity
FIXED: ALL Bloch3d vector not normalized to unity

Fixed error where all vectors were normalized to unity in Bloch3d
(mixed states not possible)

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