Changelog for btbuilder-0.5.18-3.fc33.x86_64.rpm :

* Mon Jul 27 2020 Fedora Release Engineering - 0.5.18-3- Rebuilt for https://fedoraproject.org/wiki/Fedora_33_Mass_Rebuild
* Thu May 28 2020 Jonathan Wakely - 0.5.18-2- Rebuilt for Boost 1.73
* Sun Jan 26 2020 Dennis Payne - 0.5.18-1- New version of btbuilder released.