Release 0.7.0

**Important changes**:

- `cleanup/stale_days` is renamed to `cleanup/data_files_compress_after_days`
- `cleanup/rotten_days` is renamed to `cleanup/data_files_delete_after_days`
- sbws now takes as an argument the path to a config file (which contains
 `sbws_home`) instead of `sbws_home` (which contains the path to a config
file)

See the changelog for more information