For my purposes I only need the one file, I could see many use cases where I and/or others would need multiple files minified at once though, is that already a feature?
For the cache buster, it is what I wanted but not in the exact way. Instead of adding query params (?ver=xxxxx) to the url, is it possible to just add it to the minified file string?
So from:
minify-b1–b89898e14f303e4dadce6a76f3772cf7.css?ver=1439911722
To:
minify-b1–b89898e14f303e4dadce6a76f3772cf7-ver-1439911722.css
The problem with using query params is that some proxies will not properly cache those files, which can lead to a lot of unwanted requests.