Data-plumber

Changed

- changed `finalize_output`-callable argument signature, it now also takes `records` (`16623d9`)

Added

- added `finalize_output`-override option to `Pipeline.run` (`e951f97`)

Changed

- `Pipeline` now supports empty `PipelineComponent`s as labels within pipeline (`631bc3d`)

Fixed

- update and fix errors in documentation (`2318210`)

Changed

- added a list of previous `StageRecord`s as kwarg for the call to a `Fork`'s conditional (`2f1cb77`)
- changed `StageRecord` into a proper dataclass (`e7eae6d`)

Changed

- added common base class `_PipelineComponent` for `Pipeline` components `Stage` and `Fork` (`f628159`)

Added

- added docs to package metadata (`061e311`)
- names for `PipelineComponents` can now be declared in extension methods (`append`, `prepend`, ...) (`8363284`)
- `Pipeline` now supports `in`-operator (usable with either component directly or its name/id) (`5701073`)
- added requirements for `Pipeline` to be unpacked as mapping (`b2db8fa`)

Fixed

- fixed issue where `Fork`-objects were internally not registered by their id (`b267ca4`)