Phenodata

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- Add commands "phenodata nearest-station" and "phenodata nearest-stations"
- Add parameter "--humanize" to improve user output by resolving ID columns
to appropriate text representions from metadata files
- Update "Usage" section in README
- Add humanized representation for "forecast" mode
- Add "--sort" parameter for sorting by result columns
- Use shorter representation of humanized "Station" name

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- Refactoring and modularization
- Make FTP client wrapper for DWD CDC server universal
- Improve inline documentation
- Improve CSV import string data cleansing and integer type coercion
- Improve filtering mechanics
- Filter by quality-level and quality-byte
- Add forecasting feature

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- Add command "phenodata observations" for acquiring observation data
- Filter observations by file names, station ids and years
- Add command "phenodata list-quality-bytes" for DWD
- Add option "--format={tabulate,json,csv}" for specifying output format

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- Add command "phenodata list-quality-levels" for DWD
- Add generic FTP resource caching honoring file modification time to speed up subsequent invocations

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- Implement commands list-species, list-phases and list-stations for data source DWD
- Improve release process
- Update documentation

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- Initial project skeleton
- Add initial documentation
- Add code basics


build
bump2version>=1,<2
keyring>=20,<24
twine>=3,<5