Changelog

The format is based on Keep a Changelog, and this project adheres to Semantic Versioning.

[Unreleased]

Used an incompatibility with the DaRUS update to 6.2 to clean up a little.

Replaced dependency on pyDataverse by direct API calls using the requests package
- Removed dependency to pyDataverse
- Added dependency to requests
Added version to download for each dataset in config.json, i.e.
```
[{"doi": "doi:10.18419/darus-????", "version": "latest"},
{"doi": "doi:10.18419/darus-????", "version": "1.0"},
```
The old format is still accepted, but support may be removed in a future version.
Added check for md5 hash before downloading a file from the server. Download only, if file has changed. This should speed up incremental downloads, where only some files were added.

Added program help:

python scripts/get_data.py -h
# or
python scripts/get_data.py --help

Added possibility to add logging level to program call, e.g.
```
python scripts/get_data.py -log info
```
Updated Reamde.md