roll back try/except block in primitive_sum_arrays from #22 the real fix was #23
roll back try/except block in primitive_sum_arrays from #22
the real fix was #23

HIPS/autograd,kcarnold/autograd,FighterLYL/autograd,melgor/autograd,t1m0thy/autograd,jackkamm/autograd,HIPS/autograd,barak/autograd,hips/autograd,hips/autograd