Release 3.3

* [Conf] Add missing groups for whitelist module symbols
* [CritFix] Neural: Fix keys regression after #3968
* [Feature] Accept upstream in lua_tcp
* [Feature] Add ability to statically maintain disabled/enabled patterns
* [Feature] Add function to store upstreams for HTTP urls
* [Feature] Allow augmentations set in Lua API
* [Feature] Allow lua_http module to accept upstreams
* [Feature] Allow to limit write access to fuzzy storage by key
* [Feature] Allow to sort symbols output
* [Feature] Check content for binary stuff before dumping it to Lua
* [Feature] Implement symbols augmentations
* [Fix] Add missing flags
* [Fix] Add more sanity checks for rua in dmarc_report
* [Fix] Adjust length of the fuzzy checks for short text parts
* [Fix] Another try to fix add headers compatibility logic
* [Fix] Another try to fix race condition in the runtime destruction
* [Fix] Avoid cyclic references in symcache and fix memory leaks
* [Fix] Avoid overriding IP with Sender IP
* [Fix] BAD_REP_POLICIES did not trigger when message was classified as spam by Bayes
* [Fix] Bind AF_UNIX DGRAM client connection to annonymous address
* [Fix] Disable IPv6 lookups for Blocklist.de RBL
* [Fix] Distinguish dynamic and static items
* [Fix] Dkim: Ignore unknown DKIM kv pairs as stated in RFC
* [Fix] Dmarc report: Use local timezone instead of GMT
* [Fix] Do not exclude authenticated users from URIBL lookups
* [Fix] Empty envelopes should not be emitted as arrays (json+messagepack) when populated envelopes are objects. This greatly complicates decoding in strictly typed languages.
* [Fix] External_relay: Restore the originating hostname check
* [Fix] Fix DKIM keys with spaces still allowing errors on invalid base64
* [Fix] Fix copying of sockaddr_un addresses
* [Fix] Fix crash with cname replies
* [Fix] Fix dependencies propagation
* [Fix] Fix iteration over milter headers
* [Fix] Fix ordering when sorting symcache
* [Fix] Fix reading of the cached maps
* [Fix] Fix several issues with the HTTP keepalive parsing
* [Fix] Fix stack smashing
* [Fix] Fix synchronous auth/select in lua_redis
* [Fix] Fix various symcache issues
* [Fix] Ignore all (I hope) unknown DKIM signature KV pairs
* [Fix] Ignore directories in RarV5 archives
* [Fix] Libucl: avoid memory leak on objects merging
* [Fix] Lua_tcp: Another try to fix closing logic
* [Fix] Mempool: Fix alloc_array function to actually multiply nmembers by size
* [Fix] Only check allowed fuzzy worker update ips for non-unix sockets
* [Fix] Plug memory leak in regexp destruction with pcre2
* [Fix] Properly check the original email flag
* [Fix] Properly deal with `get_symbol/get_metric_symbol` ambiguity
* [Fix] Properly parse expressions atoms
* [Fix] Properly set `Host` in rspamd_proxy
* [Fix] Rbl: Fix received positioned checks
* [Fix] Remove check for a score with no symbol being registered
* [Fix] Same fix for lua_tcp
* [Fix] Skip cname records when processing SPF records
* [Fix] Skip sending dmarc reports in no-opt mode fixes https://github.com/rspamd/rspamd/issues/4241
* [Fix] Stop slow timer on task destruction
* [Fix] Symcache: Do not use C style comparators in C++ sorts
* [Fix] Try to avoid a corner case for `@` pattern
* [Fix] Try to fix dkim reputation adjustements
* [Fix] Try to fix passthrough results processing logic
* [Fix] Try to fix the mess with read only flag
* [Fix] Upstreams: Don't ignore revive_time config option
* [Fix] Use proper format string, sigh...
* [Fix] Use space category in ragel automata to resolve space characters
* [Fix] Zstd: Fix compression with the new Zstd API
* [Fix] milter_headers: Header fields may be inserted at wrong position.
* [Project] Add experimental HTTP statistics backend
* [Project] Add more methods for symbols addition
* [Project] Add raii_sink file helper
* [Project] Add some more methods
* [Project] Add symbols processing methods
* [Project] Allow `=` separated augmentations to be treated as kv pairs
* [Project] Allow to extract augmentation values
* [Project] Few more methods
* [Project] Fix on conditions
* [Project] Further efforts to make a more consistent architecture
* [Project] Further rework
* [Project] Further rework tracking
* [Project] Further split of the code
* [Project] Get rid of C style ctors/dtors
* [Project] Http_stat: Notice statfiles when creating runtime
* [Project] Implement dynamic items lookup and processing
* [Project] Implement item finalization
* [Project] Implement more methods
* [Project] Implement runtime creation
* [Project] Implement settings processing + some neats
* [Project] Implement some conditions checks
* [Project] Implement validation logic
* [Project] More methods
* [Project] Move runtime cache part to a separate unit
* [Project] Move some more methods
* [Project] Re-implement counters method
* [Project] Reimplement dependencies processing
* [Project] Remove obsoleted methods
* [Project] Remove old code (finally)
* [Project] Rework symbols execution
* [Project] Some more adjustments in symbols registration
* [Project] Start rewrite symcache in c++
* [Project] Support augmentations with values
* [Project] Symcache: Use ordered filters to avoid extra lookups
* [Rework] Another movement
* [Rework] Augmentations can now imply flags
* [Rework] Further steps
* [Rework] Further work on deps processing
* [Rework] Implement cache resorting
* [Rework] Isolate disable/enable logic for the configuration ucl objects
* [Rework] Move item implementation to a separate header
* [Rework] Multimap: Avoid prefilters usage where augmentations can be used
* [Rework] Pass upstream when sending TCP requests
* [Rework] Re-implement cache sorting
* [Rework] Reimplement saving/loading the cache items
* [Rework] Reiterate on priorities
* [Rework] Rework files structure
* [Rework] Rewrite rspamc in C++
* [Rework] Simplify scores check and extend it to pre/post filters
* [Rework] Switch minimum C++ standard version to C++20
* [Rework] Try to fix the mess with types & flags
* [Rework] Use another version of hash table from the same author
* [Rework] Use dynamic items for calling callbacks
* [Rework] Use dynamic items in the callbacks
* [Rework] Use hash map for id->symbol mappings
* [Rework] Use khash instead of uthash in rdns compression logic
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