Should we add `a * b` for vectors?

[John Colvin]

On Friday, 22 September 2017 at 17:11:56 UTC, Ilya Yaroshenko 
wrote:
> Should we add `a * b` to ndslice for 1d vectors?
> Discussion at https://github.com/libmir/mir-algorithm/issues/91

Unless it's always just simple element-wise, make it a different 
type. N-dimensional rectangular data structures are only 
sometimes matrices.

Also, if you did two different types I have concerns about code 
that mixed the two, it would become quite unclear which ones were 
matrix operations and which were element-wise.