I use Hugo a lot for my web development work, and I think it is pretty great. The one problem with it for many non-technical people I work with is that there is no CMS feature, they want a website administration page where they can do the usual.

Here are some useful partials I use in this theme.

layouts/_default/_markup/render-image.html

This replaces the default markup template for rendering an image when the markdown code ![Alt Text](/path/to/img.jpg) is used. It calls another partial you have to add to your theme or layout directory in your site called ImageConverter.