Data-plumber

Changed

- refactored `Fork` and `Stage` to transform string/integer-references to `Stage`s into `StageRef`s (`7ba677b`)

Added

- added decorator-factory `Pipeline.run_for_kwargs` to generate kwargs for function calls (`fe616b2`)
- added optional `Stage`-callable to export kwargs into `Pipeline.run` (`8eca1bc`)
- added even more types of `StageRef`s: `PreviousN`, `NextN` (`576820c`)
- added `py.typed`-marker to package (`04a2e1d`)
- added more types of `StageRef`s: `StageById`, `StageByIndex`, `StageByIncrement` (`92d57ad`)

Changed

- refactored internal modules (`cf7045f`)

Added

- added `StageRefs` `Next`, `Last`, and `Skip` (`14abaa7`)
- added optional finalizer-`Callable` to `Pipeline` (`d95e5b6`)
- added support for `Callable` in `Pipeline`-argument `exit_on_status` (`154c67b`)

Fixed

- `PipelineOutput.last_X`-methods now return `None` in case of empty records (`b7a6ba1`)

Changed

- **Breaking:** refactor `PipelineOutput` and related types (`1436ca1`)
- **Breaking:** replaced forwarding kwargs of `Pipeline.run` as dictionary `in_` into `Stage`/`Fork`-`Callable`s by forwarding directly (`f2710fa`, `b569bb9`)

Added

- added missing information in module- and class-docstrings (`7896742`)

initial release