Old codes not included in current release

[stuchalk]

I am the developer of a new resource that will be published (in the next few months) by NIST in the US that will enable the interoperability of digital representations of units of measurement. The UNECE list of codes for units of measurement in international trade is an important part of the content for the service and this 'issue' (clearly not actually an issue) is to ask i) if the units codes from the legacy version of the vocabulary are deprecated? (so I can mark them as such in my system) and ii) how stable is the vocabulary? (so I can know how often to recheck your site).

If you would rather contact me outside GitHub please email me at [email protected].

Thanks,
Stuart Chalk
NIST Associate and UNF Faculty member (https://webapps.unf.edu/faculty/bio/N00002621)