What changed, and when

Each change to the listings and to the rules behind them is written down here, the newest at the head of the table. A published entry stays as it was written; a mistake in one is put right by a new entry.

Entries marked data add or refresh cards, corrections come from messages sent through the form, text entries touch wording only, and method entries alter how facts are gathered. A correction about one place is shown on that place's card as well.