I just refreshed this website. It's now based on the Nikola static website generator instead of my home-grown static website generator created from docutils and make. I'm still hosting it in an Amazon S3 bucket. Hosting a static website on Amazon S3 requires very little maintenance and is low-cost.
There's still more to update on the site (click around and you can find parts of the old site), but it's enough of an improvement that I figured it could go live.
Updated 2015-09-11: my site is now fully converted to Nikola.