Finally

I notice that I have impressively failed to make an update to the book for a month now. Actually there has been a lot of work going on - I have almost completed a first draft of the regression chapter. I have also corrected many mistakes from Chapter 6 that were helpfully identified by Yun Fu. Also Gabriel Brostow drew my attention to a few issues in Chapters 1 and 2 that have now been sorted out. I'm going on holiday for two weeks now, but I'm going to come back and attend to the classification chapter when I return on Sept 20th.