* [CritFix] Make flags mutually exclusive for mime parts
* [CritFix] Strictly deny unencoded bad utf8 sequences in headers
* [Feature] Add Kaspersky antivirus support
* [Feature] Add method to get dkim results
* [Feature] Add more words regexp classes
* [Feature] Allow to choose words format in `rspamadm mime`
* [Feature] Allow to get all types of words from Lua
* [Feature] Allow to get task flags in C expressions
* [Feature] Allow to require encryption when accepting connections
* [Feature] Ignore bogus whitespaces in the words
* [Feature] Implement more strict configuration tests
* [Feature] Improve SPF results in Authentication-Results
* [Feature] Support ClickHouse database
* [Fix] Add failsafety for utf8 regexps
* [Fix] Do not trigger BROKEN_CONTENT_TYPE on innocent text parts
* [Fix] Emit error if connection has been terminated with no stop pattern
* [Fix] Fix boundaries checks in embedded messages
* [Fix] Fix double free
* [Fix] Perform policy downgrade on sample out, add tests
* [Fix] Properly escape utf8 regexps in hyperscan mode
* [Fix] Selectors - attachments args condition
* [Fix] Some fixes for raw parts
* [Fix] Treat learning errors as non-fatal
* [Fix] Use tld when looking for DKIM domains
* [Project] Words unicode structure rework
* [Project] Add preliminary Redis Sentinel support
* [Project] Improve Authentication-Results header
* [Project] Rework DKIM checks results
* [Project] Use more generalised API to produce meta words
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