I don't think this should be added. The whole point of vector.py was to be a simple educational demo of a Python class its special methods work. It was not intended to grow more features or ever be used in production.
Also, vector-to-vector multiplication, division, and floordiv would only make sense for an elementwise array class. This class focuses on standard vector operations. If anything, what is missing is a method for a dot product.
Thank you for submitting a PR, but it is going to be declined from the reasons listed about.