jquery/jquery-ui — pull request #1074 by notabene (2013-09-05 12:37:22+00:00)
Title: Day TH's: scope=col

A TH must feature a way to know which span of TD's it applies to, and in simple tables such as date tables, this can be achieved through the use of the scope attribute. (I needed this on a project that has drastic accessibility requirements).