Changelog for qwt5-qt4-devel-5.2.2-37.fc31.x86_64.rpm :

* Fri Jul 26 2019 Fedora Release Engineering - 5.2.2-37- Rebuilt for https://fedoraproject.org/wiki/Fedora_31_Mass_Rebuild
* Sat Feb 02 2019 Fedora Release Engineering - 5.2.2-36- Rebuilt for https://fedoraproject.org/wiki/Fedora_30_Mass_Rebuild