1.5.1

Release 1.5.1

* [CritFix] Fix processing of stop_patterns with `\0` character
* [CritFix] Fix setting of raw key for signing
* [Fix] Fix lua exports from plugins during reload
* [Fix] Fix prefilters action scores
* [Fix] Fix symbols processing order
* [Minor] Help cmake find gthread
* [Minor] Some cmake fixes
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