OK! It is now possible to differentiate in a translation JSON file between entries which are translated (differ from en-us string), entries which have not been translated yet (no entry in JSON at all), and entries which have been reviewed and explicitly chose ot revert to en-us (set to JSON keyword null
).
See PR #115, in particular the end of the translation/json2h.py
file, for a commented-out modification that should (in the long run) make translators’ lives easier, by listing the “new” strings that need review.