Changelog for R-stringi-1.1.6-3.fc28.x86_64.rpm :

* Wed Feb 07 2018 Fedora Release Engineering - 1.1.6-3- Rebuilt for https://fedoraproject.org/wiki/Fedora_28_Mass_Rebuild
* Thu Nov 30 2017 Pete Walter - 1.1.6-2- Rebuild for ICU 60.1
* Sat Nov 18 2017 Elliott Sales de Andrade 1.1.6-1- Update to latest release.
* Thu Aug 24 2017 Elliott Sales de Andrade 1.1.5-1- initial package for Fedora