Changelog for R-commonmark-1.5-1.fc26.x86_64.rpm :

* Mon Apr 30 2018 Elliott Sales de Andrade - 1.5-1- Update to latest version
* Wed Feb 07 2018 Fedora Release Engineering - 1.4-2- Rebuilt for https://fedoraproject.org/wiki/Fedora_28_Mass_Rebuild
* Mon Oct 30 2017 Elliott Sales de Andrade 1.4-1- initial package for Fedora