New RSS feeds

I've tweaked my RSS feed generating script so that it can now generate the latest 10 pages for any subdirectory on the site, not just the site as a whole. The existing latest updates feed will still operate perfectly, but you can now subscribe to my blog or Fine Structure specifically. In all cases you will be able to see the latest 10 updates.

This feature is most useful in the three cases I just mentioned. For most other subdirectories, updates are exceedingly sporadic!