Looks like a great utility, but the output css isn't very compact. For example,
ul li:nth-child(1) {
background: red
}
ul li:nth-child(2) {
background: red
}
ul li:nth-child(3) {
background: red
}
should just be ul li:nth-child(1),
ul li:nth-child(2),
ul li:nth-child(3) {
background: red
}
Also, it's not very clear how to download the family.scss file, it's buried deep in an oddly named subfolder in the repo.