In general, we want the scalar division of vectors and matrices to
have the matrix come first and the scalar come second. It doesn't make
sense to divide a scalar by a vector or to divide a matrix by a vector,
so these should now produce errors at compile time.
Also, make sure to add additional types that can be multiplied together
using the * operator. If we multiply two vectors together, that's a dot
product. The size restrictions should be enforced at compile time by the
template parameters for VectorBase<T, N>::Dot
In this way, we can support vector/matrix multiplication by retaining the
* operator as well.