Building improvements (e.g. roofs, parts)
Correct roof shapes and directions
correct roof:slope:direction to roof:direction (see wiki)
correct roof:orientation to roof:direction (see wiki)
use correct tag 'roof:direction' https://forum.openstreetmap.org/viewtopic.php?id=31481
use correct tag 'roof:direction' https://forum.openstreetmap.org/viewtopic.php?id=31481
replace roof:slope:direction with roof:direction
replace roof:slope:direction with roof:direction, correct angles