[Tree] Christmas markets and celebrations around the world

Version 0.02 (2023-12-18 10:39:01.652000)

updates: Incorporated information about Christmas markets along the Rhine River

Version 0.01 (2023-12-02 18:03:08.717000)

updates: Added information about the Christmas market in Hélesmes, France

Version 0.0 (2023-11-26 15:30:15.997000)

updates: