Reverse dependencies for hipsterhash

Latest version of the following gems require hipsterhash

Gem	Version	Date	Downloads
smartring +14.3 Thousand Downloads	`0.0.7` May 17, 2018	May 17, 2018	14.3 Thousand
sfkb +6.39 Thousand Downloads	`0.1.3` April 13, 2018	April 13, 2018	6.39 Thousand
rack-mp +3.81 Thousand Downloads	`0.0.1` April 11, 2014	April 11, 2014	3.81 Thousand
cloudflarer +3.67 Thousand Downloads	`0.0.1` August 14, 2016	August 14, 2016	3.67 Thousand