gruntjs/grunt-contrib-sass — pull request #4 by grncdr (2012-10-11 04:12:58+00:00)
Title: Fix for removal of helper API in 0.4

It seems like the helper API (and therefore the concat helper used by this task) has been removed. I replaced it with a less full-featured bit of code rather than duplicate the old concat helper and now this task works with grunt 0.4 again.

There may be a better way to do this, but I'm not that familiar with grunt internals yet.