twbs/bootstrap — pull request #12586 by antespi (2014-02-04 23:58:49+00:00)
Title: Hs

Add HS (Horizontal Small Device, horizontal phone) breakpoint at 480px.
Now we have this breakpoints for phone devices:
< 480px (xs)
480px < 768px (hs)
visible, hidden, pull, offset and container classes generated in less code