In the previous version (main) we were excluding None values, mostly to exclude empty geometries but sometimes it meant we were excluding valid properties, which could lead in invalid CSV headers (because row 1 and row 2 could have different properties, if row 1 had None property)
closes #159
In the previous version (main) we were excluding
Nonevalues, mostly to exclude empty geometries but sometimes it meant we were excluding valid properties, which could lead ininvalidCSV headers (because row 1 and row 2 could have different properties, if row 1 hadNoneproperty)