Reduce from level 2 to level 1
Add and fix level tagging including lift
Add Bahnhof Aarau station to station relation
Add stop_area relation for Niderfeld
Add uic_name and uic_ref to railway platform
tram stop Dietikon, Niderfeld will be ready at the timetable change
Remove construction attributes
Add ferry_terminal Wasserburg Hafen
Add local_ref=1 at railway stop