I use Webflow to design pages which I host on my own server, and I also modify the Webflow-generated code. I only do so in very minimal ways at the moment, but I wanted a robust way for handling those changes so that I could continue to design in Webflow and easily import into my site (and have my changes automatically applied).
If that sounds like something you've struggled with / wanted to do, then you might want to try this little tool I put together:
Usual disclaimers: very alpha, yadda yadda. Might eat your cat and give you rabies, etc. That said, if you find a specific problem, have a suggestion, or (even better) a pull request, let me know!