kandanapp/kandan — pull request #150 by mjtko (2013-03-01 15:05:50+00:00)
Title: Enhanced notifications (#133)

This PR causes @mentions of the current user to play the 'gong' sound instead of the usual channel sound. In addition, this 'attention' sound is always played, even when the browser has focus or the @mention is sent from a channel other than the one the user is currently looking at.