Reverse dependencies for zippy

Latest version of the following gems require zippy

Gem	Version	Date	Downloads
testability-driver-runner +75.8 Thousand Downloads	`1.5.4` June 07, 2012	June 07, 2012	75.8 Thousand
upcloudify +35.7 Thousand Downloads	`0.3.3` January 31, 2017	January 31, 2017	35.7 Thousand
paperbin +23 Thousand Downloads	`0.2.3` October 13, 2014	October 13, 2014	23 Thousand
sweet +8.69 Thousand Downloads	`0.0.3` July 27, 2010	July 27, 2010	8.69 Thousand
lyrics-ebook +5.51 Thousand Downloads	`0.1` November 03, 2010	November 03, 2010	5.51 Thousand