Cogear.js blog works for GitHub Pages too, but with many obstacles.

You can try to follow this post (https://itnext.io/how-to-build-a-blog-with-cogear-js-fd45a6cfbde1), but it isn't enough to make it a customized blog.

I managed to make a working version here, though -- (https://github.com/patarapolw/blog/releases/tag/v0.1-cogear)