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- New features
- Add new object type for Quaternary stratigraphy (Quartair stratigrafie)
- Add support for using Join using a different column name: `Join(df, on='...', using='...')`
- Add 'filterstatus' and 'filtertoestand' to Peilmeting subtype of GrondwaterFilter
- Fixes and improvements
- Fix search for GrondwaterFilters (update for WFS service changes regarding `filternr`)
- Fix 'Methode' field of Peilmeting subtype of GrondwaterFilter
- Exclude empty filters (i.e. Put without Filter) from GrondwaterFilterSearch
- Improve performance by using parallel processing and connection pooling
- Documentation-only updates
- Update contributing guidelines