3.9.1

Release 3.9.1

* [Conf] Spf: Add R_SPF_PLUSALL symbol with some score
* [Feature] Spf: Treat SPF +all in a special way
* [Minor] Ensure some safety when checking weights
* [Minor] Fix several issues with flag propagation
* [Minor] Gpt: Improve prompt and add some conversion heursitics
* [Minor] Gpt: Remove top_p reduce temperature to 0
* [Minor] Gpt: Set response_format
* [Minor] Gpt: Use gpt-4o-mini by default
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