ShapelyDeprecationWarning: Directly calling the base class 'BaseGeometry()' is deprecated

[stertingen]

Apparently, dask-geopandas uses deprecated shapely features in union_all. I'm getting the following warning:

https://github.com/geopandas/dask-geopandas/blob/v0.4.2/dask_geopandas/core.py#L296: ShapelyDeprecationWarning: Directly calling the base class 'BaseGeometry()' is deprecated, and will raise an error in the future. To create an empty geometry, use one of the subclasses instead, for example 'GeometryCollection()'.
  meta = BaseGeometry()