I have just updated nim to the new 0.16 and I am checking that all my libraries still work.
While compiling [linalg](https://github.com/unicredit/linear-algebra) (just clone the repo and then `nimble test`) I get the error `Error: ordinal type expected` [here](https://github.com/unicredit/linear-algebra/blob/master/private/access.nim#L56). I am not sure what the error message means, hence I do not know how to try to fix it. Can anyone shed some light?
