Browser zoom breaks layout

If you CMD+"+" or CMD+"+" (zoom in/zoom out) a few times Packery reacts and reapportions itself to the new browser window size - however if this is performed quickly Packery fails to correctly reposition the items.

The attached screen shot is what happens when you perform a zoom in/zoom out (3 times in and 3 times back out) in quick succession - demoed on the Packery Methods page (destroy).

Codeine where zoom-in zoom-out can be performed:
http://codepen.io/desandro/pen/kEjed


Reproduce the issue using the CodePen demo and the Packery Methods page's destroy example, zooming in and out rapidly as described. Then trace the browser resize and item-repositioning behavior; done means items are correctly repositioned after rapid repeated zoom changes.

Written by the indexing model from the issue text.