I did actually make a start in hand editing the CSV, but to be honest that's a right pain. I thought I would post first.
(Related: hopefully editing one text file in a simple format is easier and also will result in less edit conflicts than one big file - that's one of the points of the software I'm working on.)
It is just events, but there is all kinds of filtered feeds (and indeed, you can filter your own events). Open Data is one of the big principles behind it and it's reused in many other places, which is great.