Re-add building element to relation (accidentally removed in previous edit)
Missed one roof material. Added.
Add building materials and roof materials
Add missing building element to building relation with the others
Tweaks to picnic shelter model
Correct tags on picnic shelter building parts
Assign part to 6x building elements
Fix more height/min_height mix ups
Fix height/min_height mix up, add roof direction, orthoganalise shape
Add building levels, picnic shelter
Add grey-coloured top surface to two rooftop trim elements
Adjust/correct flag wikidata after some more research.
Add min_height to building part to prevent overlap with a different part
Lower building element to avoid gap between element and sloped roof it is on
Change roof shaped from hipped to hip-and-gable
Lower min_height of building element
Adjust height of wall segments