Reverse dependencies for timeframe

Latest version of the following gems require timeframe

Gem Version
earth +500 Thousand Downloads 1.2.1

January 29, 2014

sniff +369 Thousand Downloads 1.1.1

November 07, 2012

carbon +183 Thousand Downloads 3.0.1

June 20, 2012

emitter-ruby19 +5.82 Thousand Downloads 0.1.4

September 28, 2010