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**added**
- example usage
- detect api response with all "0"s or "-"s
- return all values a numbers (also '-' as 0 or 0.0)
**changed**
- improved precipitation forecast calculation
- improved/added unit tests
- windirection and windazimuth are now reversed
- winddirection: N/O/Z etc.
- windazimuth: is measured in degrees
- removed 'Meetstation ' from station name