Tpcp

Added

- ``custom_hash`` the internally used hashing method based on pickle is now part of the public API via ``tpcp.misc``.
- ``DummyOptimize`` allows to ignore the warning that it usually throws.

Changed

- Relative large rework of the TypedIterator. We recommend to reread the example.

- The snapshot plugin now supports a new command line argument `--snapshot-only-check` that will fail the test if no
snapshot file is found. This is useful for CI/CD pipelines, where you want to ensure that all snapshots are up to
date.
- The snapshot plugin is now installed automatically when you install tpcp. There is no need to set it up in the conftest
file anymore.

Fixed

- TypedIterator does not run into a RecursionError anymore, when attributes with the wrong name are accessed.

Fixed

- TypedIterator now skips aggregation when no values are provided

Changed

- The TypedIterator now has a new `results_` attribute and has improved typing to allow for better IDE integration.

Fixed

- Downgraded minimum version of sklearn to 1.2.0 to avoid version conflicts with other packages.