zurb/foundation — pull request #6075 by ryanshrum (2014-12-02 22:18:58+00:00)
Title: Collapse/uncollapse row

I needed the ability to add/remove padding (`.collapse`) on the columns based on the size at which browser was at. Similary to `.small-centered`/`.medium-uncentered` you can use `.small-collapse`/`.medium-uncollapse`. Since I needed it, thought someone else may, too.