Changelog for json4s-3.2.7-2.fc21.noarch.rpm :
Sun Jun 8 14:00:00 2014 Fedora Release Engineering - 3.2.7-2
- Rebuilt for https://fedoraproject.org/wiki/Fedora_21_Mass_Rebuild

Wed Feb 19 13:00:00 2014 William Benton - 3.2.7-1
- initial package