Chore: update and pin black version

Chore: update and freeze ruff version

Docs: Clarify callback descriptions.

Docs: Telemetry API endpoint.

Test example: add realtime datapoints generator and use it

README.md: Updated package egg.

HistoryManager: Customizable aggregation window.

As any cron expression is allowed, the retroactive, per-day batching implementation was dropped.
Implemented option of not having an archive.

Added automatic publish workflow.

First PyPi release - version 0.3.0