No option for prefixes

THis plugin works great until you need t preview a modal with a prefix.

there's no option to add one or take it from the slug value in dato.

So every time you git "Preview" you open the site on a 404 page.

For example the page should go to:

https://preview.gtsb.io/projects/example-project

instead, it goes to:

https://preview.gtsb.io/example-project