I tend not to use CDNs as I feel they could hypothetically allow to track anyone on any website and they could be used to provide backdoors in my apps (hypothetical example: Trump gets elected and decides all the jquery.min.js files sent to Canada via US CDNs have to include something that breaks Canadian apps, then my code stops working). I like to have all my libraries on my server.
It would be awesome if something existed to use this tool while ensuring users do not modify the files