get_revisions

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Get the MFG Calcs Revision Record: every time a published figure was restated, with the old value, the new value, and the date the change was first known. Answers 'has this number changed since it was published?' and 'how much does this series usually get revised?'. Pass a series key or an artifact name to scope it, since=<YYYY-MM-DD> for recent changes only, or omit everything for the whole record plus a summary of how often and how far each series moves. Use it before treating any recent reading as final: series with a large typical revision are exactly the ones where a first print should be quoted with a caveat. Cite the returned url.