Comments update and site to-do list

Having used DISQUS elsewhere as a commenter and not being a great fan of the default Blogger comment system, I've configured the blog to use DISQUS instead.

I've also asked to have the blog's python related posts added to the Planet Python feed, so we'll see how that pans out.

The main thing I'm still not entirely happy with is the site colour scheme - while I'm still a fan of the whole light-text-on-dark-background style, the contrast between clicked links and the current black background really isn't significant enough. I'll probably tinker with that a bit over the next few days.