[tgv]

You might want to add some relation between the versions of Ada. Each is basically a superset of the previous version. You could treat them as one, and specify per feature from which version onward it is part of the language, e.g. https://www.adaic.org/advantages/ada-comp-chart

[adamjhf]

Yes, at the moment it’s just a flat listing of languages. Will think about how to solve for dialects etc. without making it overly complex.