Major update affecting both the code, its use and its output.
Used for to produce the new version of the AWS data presented at the NMM2024.
What's Changed
* Producing data in its new structure: level 2 statin data + level 3 site data (fixing 246, 247, 175)
![image](https://github.com/user-attachments/assets/701cc551-4355-4563-ad40-45477780d3ce)
* Merging of data from different stations at the same site + historical GC-Net station data are appended to GEUS GC-Net station data (fixing 175)
* Calculation of gap-free and smoothed `lat`, `lon` and `alt` and mean coords as attributes (fixing 236, 173, 124 )
* Calculation of a continuous surface height, ice surface height and snow height variables `z_surf_combined`, `z_ice_surf` and `snow_height` (fixing 10)
* Calculation of the thermistors' depth (fixing 248)
* Reading station configutation files from `AWS-L0/metadata/station_configuration` (fixing 217)
* Updating metadata CSV automatically (fixing 142)
* ACDD attribute compliance
* Updated tests
* Code refactoring
* new pandas and xarray version
**Full Changelog**: https://github.com/GEUS-Glaciology-and-Climate/pypromice/compare/v1.3.6...v1.4.0