[Context] Allow unique logger per async task (#75)

* [Context] Allow unique logger per async task

[CI] Bump actions/cache to v4 (#74)

Bump actions/cache to v4

[CI] Bump python version to 3.9 (#72)

Update Pipfile.lock (#71)

Fix `QualifiedOffset.from_event` (#70)

Add support for batch deserialization (#65)

[Event] Add topic property (#61)

Bump pip dependencies and add python 3.10,3.11 to CI (#59)

Exclude private fields from the result of `Event.to_json` (#56)

[Logger] Fix multiple logs (#53)