Work is ongoing on the technology behind this website. (As always!) The most recent change which will only interest WordPress developers is that I’ve split the original (largely) single PHP file into individual template parts, in line with the standards laid out by Underscores.
Moving individual parts of the template into individual files has the advantages of simplifying the code structure, taking advantage of template inheritance hierarchy for different post types, and making each part of the site an individual module, allowing for easier re-use across other themes.
Developers can check the changes in the latest commit to the theme’s Github repository.