This is not a criticism of this project specifically, but I feel like when you come out with a framework like this you should have a big "Why you should use Framework XYZ instead of Boostrap" section somewhere, because this is the main question most people will have.
Why I should use Bootstrap?
Bootstrap is the incumbent so other similar frameworks _must_ explain why they are better, or it's the default choice.
Of course if you actually want to know why you should use a framework like bootstrap then you can just read bootstrap's site.