Wetterdienst

Fix
- Fix bug where duplicates of acquired data would be dropped regarding only the date but not the parameter

Feature
- Add NOAA NWS Observation API
- Add Eaufrance Hubeau API for French river data (flow, stage)

Fix
- Fix NOAA GHCN access issues with timezones and empty data

Fix
- Fix DWD Observation urban_pressure dataset access (again)

Feature
- Add example to dump DWD climate summary observations in zarr with help of xarray

Fix
- Fix DWD Observation urban_pressure dataset access

Feature
- Add support for reading DWD Mosmix-L all stations files

Feature
- Add summary of multiple weather stations for a given lat/lon point (currently only works for DWDObservationRequest)

Fix
- Make DwdMosmixRequest return data according to start and end date