Reverse dependencies for cantango-core

Latest version of the following gems require cantango-core

Gem	Version	Date	Downloads
cantango-config +56.3 Thousand Downloads	`0.2.1` December 20, 2011	December 20, 2011	56.3 Thousand
cantango-masquerade +27 Thousand Downloads	`0.1.3.2` December 09, 2011	December 09, 2011	27 Thousand
cantango-api +22.7 Thousand Downloads	`0.1.3` December 09, 2011	December 09, 2011	22.7 Thousand