add new sommer toboggan, update hiking paths, tracks, buildings
re-add removed road (still visible on current aerial imagery), improve buildings, add driveways
specify tunnel type (avalanche protector)
fix road surface (unpaved -> paved)
fix road surface (unpaved -> paved)
fix road surface (unpaved -> paved)
fix road surface (unpaved -> paved)
fix road surface (unpaved -> paved)
fix road surface (unpaved -> paved)
fix road surface (unpaved -> paved)
fix road surface (unpaved -> paved)
fix road surface (unpaved -> paved)
fix road surface (unpaved -> paved)
fix road surface (unpaved -> paved)
add bridges and update road geometry slightly
add sidewalks, kerbs, crossings, etc
rectify buildings, add garages, etc.