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- Exporters now export NaN and -9999.0 float values as NULL.
- Fixed exporting string dtype fields (e.g. cont_type) in OGR exporter. For instance,
the string "b'something'" now is written as "something".
- Skip the dummy element (with id=0) in all exporters.
- Set the FID (feature ID) in the OGR (shapefile/geopackage/some geojson) exporters.
- Deprecate specific serializers.py under threedigrid.admin.breaches, .lines, .nodes and
.pumps.