Just because it was now convenient to do so, and my source code got a lot cleaner, I made my site's source code public.
It's hosted on GitHub, check it out here.
I also switched to the GPLv3, replacing the previous BSD-2-Clause license.
Although you probably shouldn't contribute, you can look at the source code.
And maybe repurpose the build system if you want, I don't know. It's just open, that's all.