twbs/bootstrap — pull request #12217 by hlop (2014-01-14 11:10:32+00:00)
Title: Update carousel.js

HTML5 data-* Attributes

As of jQuery 1.4.3 HTML 5 data- attributes will be automatically pulled in to jQuery's data object. The treatment of attributes with embedded dashes was changed in jQuery 1.6 to conform to the W3C HTML5 specification.

http://api.jquery.com/data/