Changelog for php-swiftmailer-5.4.2-1.fc23.remi.noarch.rpm :

* Mon May 02 2016 Remi Collet - 5.4.2-1- update to 5.4.2
* Fri Mar 25 2016 Remi Collet - 5.4.1-2- rebuild for remi repository
* Fri Oct 16 2015 Remi Collet - 5.4.1-1- initial rpm, version 5.4.1- sources from github, pear channel is dead