New data release

Footnote bodies are almost all checked and corrected (12247 in total),
footnote marks have been checked
en corrected for volumes 1-4, there remain at least (300) pages with unlinked footnotes
out of the 5270 pages that have footnotes.
Editorial text is now in the main text, on equal footing with the original letter content,
but separable from it in a number of ways.