* 22: fetch AWS credentials in every loop iteration
1.0.26
* 23 add `--silent` option for `ERROR` log level
1.0.12
- Add support for S3 Sign v4 only Regions (for example eu-central-1) - 14 add redirect support and request retry - 13 Berry doesn't work for Frankfurt located S3 credential bucket
1.0.11
- 6 berry now uses the boto3 library
1.0.8
- add missing PyYAML dependency (discovered during isolated unit tests)