Changelog for tigl-viewer-2.2.3-4.15.x86_64.rpm :

* Thu Jun 28 2018 - jan.kleinert (at) dlr.de- Upgrade to tigl 2.2.3
* Wed Apr 11 2018 - jan.kleinert (at) dlr.de- Upgrade to tigl 2.2.2
* Thu Aug 31 2017 - jan.kleinert (at) dlr.de- Upgrade to tigl 2.2.1