I at least tried to fix the "has a/no/separate bikelane" tags. https://wiki.openstreetmap.org/wiki/DE:Bicycle/Radverkehrsanlagen_kartieren#Erfassung_als_eigenst%C3%A4ndige_Linie says to use  bicycle=use_sidepath when the bike lane is correctly signed. Which I would need to check, because I don't remember. :-)