Fix fetched message decoding (#20)

Check printable? user_data (#19)

Encode as 'text' only when it's printable (#18)

Fix invalid user_data nad metadata from consumer group commit history (…

…#17)

Do not lock brod (#15)

* unlock brod and its deps

* update deps

* fix return value in handle_info

* fix ttl bug

* bump version

Add kafka token storage (#11)

* update deps

* register tokens in kafka

* allow different definitions of null

* bump brod version

* start token storage only when the hook is enabled

* update readme

* configure token storage via os env

refine logic around secrets and JWK

remove kastle endpoints

resule parse_endpoints function (#8)