h5bp/html5-boilerplate — pull request #1500 by eschmar (2014-01-26 11:58:00+00:00)
Title: Conditionally load Zepto if Browser is not IE<10, fall back to jQuery

Modern browsers should benefit from the lightweight alternative to jQuery without any drawbacks for older browser versions. I'm not sure whether the source of Zepto is acceptable in context of this repository. Looking forward to your feedback.