Great effort - really happy to see people keeping Jekyll alive.
Q: Why did you decide to rewrite the whole image handling instead of just relying on the jekyll_picture_tag gem (https://github.com/rbuchberger/jekyll_picture_tag) - I am using that since years and it just works just fine.
Simply because when I google'd my use case I didn't discover that plugin!
Maybe it would make sense to decouple the image processing code from my library so the `jekyll_picture_tag` could be used, since it's a bit orthogonal to the Propshaft-esque asset loading.
Q: Why did you decide to rewrite the whole image handling instead of just relying on the jekyll_picture_tag gem (https://github.com/rbuchberger/jekyll_picture_tag) - I am using that since years and it just works just fine.