Changelog for backward-cpp-devel-1.5-bp154.1.21.x86_64.rpm :

* Wed Feb 03 2021 Matthias Eliasson - Update to version 1.5
* BACKWARD_CXX_SOURCE_PREFIXES and many bug fixes- drop patch GNUInstallDirs.patch, fixed upstream- run spec-cleaner
* Mon Nov 18 2019 Simon Lees - %make_jobs is depricated replaced by %cmake_build
* Wed Dec 12 2018 Jan Engelhardt - Fix grammar.
* Tue Dec 11 2018 Michał Rostecki - Fix devel package description.
* Mon Oct 22 2018 Michał Rostecki - Initial release - 1.4- Add GNUInstallDirs.path: allow to specify libdir