Karton-config-extractor

Improvements:

- `ConfigExtractor` class can be extended to customize filters (https://github.com/CERT-Polska/karton-config-extractor/pull/31)

Bugfixes:

- Base CLI arguments (e.g. `--identity`) were not applied due to bug in configuration handling (27)

New features and improvements:

- `karton-core` bump to v5.0.0 (25)

Bugfixes:

- `dhash` is stored in outgoing Config tasks (https://github.com/CERT-Polska/karton-config-extractor/pull/23)
- Fix for outgoing Config tasks with embedded blobs in configuration (https://github.com/CERT-Polska/karton-config-extractor/pull/24)

Bugfixes:
* Better handling for invalid analysis tasks

Misc:
* Drop support for python3.6

Bugfixes:
- Fixed package `long_description`

Breaking change:
- Introduced support for unified `{"type": "analysis"}` format (https://github.com/CERT-Polska/karton-config-extractor/pull/10)