Changelog for rubygem-em-websocket-0.5.1-3.fc28.noarch.rpm :

* Fri May 11 2018 Jaroslav Prokop - 1:0.5.1-3- The package does not have packages needed for tests in f28
* Thu Apr 05 2018 Jaroslav Prokop - 0.5.1-2- Enable test suites after needed packages were imported to Fedora.
* Wed Jan 24 2018 Jaroslav Prokop - 0.5.1-1- Initial package