twitter/bootstrap — pull request #7906 by voodoom (2013-05-16 14:08:43+00:00)
Title: Responsive utilities display fix

Should fix a display inherit problem i stumbled on and which is also discussed here: https://github.com/twitter/bootstrap/pull/7490
I think we are currently not able to set the visible-* and hidden-* classes mobile first. We need rocket science here! Until we figured out how this rocket science could be done, this fix should help.