v0.16.0

Please note that the previous version (v0.15.0) will be deprecated soon and maybe fail to start in the future - due to bug #29 (see #29). Please update soon!

Version v0.16.0 brings a new feature to draw Option Routes and a lot of improvements in the GUI - thanks to Dominik Zapf (TU Ilmenau Ilmroosters) for inspiration and initial efforts.