I could not find an acceptable solution. It was mentioned that pointing to a CDN increases the chances that the resource is cached, but that is not always the case.
What is the alternative? Using smaller libraries? Not using libraries? Are Zepto and Skeleton good enough for small websites? What are other libraries/frameworks of similar size that you have used and liked? Are we at a point where using vanilla JS and CSS is good enough?
[1] https://news.ycombinator.com/item?id=11548816