haystack

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---
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preview:
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  - |
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    Adopt Hugging Face `token` instead of the deprecated `use_auth_token`.
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    Add this parameter to `ExtractiveReader` and `SimilarityRanker` to allow
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    loading private models.
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    Proper handling of `token` during serialization: if it is a string (a possible valid token)
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    it is not serialized.
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