A simple matrix implementation.
```rust
use matreex::matrix;
let lhs = matrix![[0, 1, 2], [3, 4, 5]];
let rhs = matrix![[0, 1], [2, 3], [4, 5]];
assert_eq!(lhs * rhs, matrix![[10, 13], [28, 40]]);
```
Hmm ... Who knows? Could be a name conflict.
Coming soon (maybe not that soon).