jquery/jquery-ui — pull request #1402 by geraldspreer (2014-12-17 10:17:50+00:00)
Title: Adding data day element to datepicker

Although this is a rather small change I did add the "data-day" element to the datepicker fields. That way certain fields (eg, fields with events) would be easier to access using css-selectors. Thought this might be useful to other people as well.