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ChangeLog
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3.2: 26 Mar 2022
* [Conf] Score MIME_OBFUSCATED_ARCHIVE to 8 points
* [Conf] Set one_shot for URIBL rules by default
* [CritFix] Fix upstreams name resolution when there is also a port
* [Feature] Add ROC feature to neural network plugin
* [Feature] Add public suffic compilation utility
* [Feature] Add support of Cloudmark
* [Feature] Allow hyperscan for ppc64, as vectorscan now suports it.
* [Feature] Allow to skip DNS resolution for keep-alive connections
* [Feature] Aws_s3: Allow to store large parts separately
* [Feature] BIMI: Add preliminary version of the BIMI plugin
* [Feature] JSON endpoint for querying maps
* [Feature] Lua_magic: Add a sane CSV heuristic
* [Feature] Lua_mime: Add schema for message transfer
* [Feature] Output average scan time in /stat endpoint
* [Feature] Show average scan time in `rspamc stat` output
* [Fix] Add guards to avoid race condition on TCP connection
* [Fix] Allow spaces in DKIM key records
* [Fix] Apply the similar fix to the url_reputation
* [Fix] Avoid overwriting whitelisted_signers_map
* [Fix] Backport PR from libucl
* [Fix] Clear SSL errors
* [Fix] ClickHouse cleanup of old partitions
* [Fix] Do not double call error handler on ssl errors in the timeout path
* [Fix] Do not forget to clear pointers on IOC reset
* [Fix] External_relay: Remove useless check of the map value
* [Fix] Find suspicious url encodings that could break url extraction
* [Fix] Fix HTTP(s) client timeout
* [Fix] Fix exclude flags setting
* [Fix] Fix expanding of the variables
* [Fix] Fix host header usage in lua_http
* [Fix] Fix http maps shared memory cache cleanup
* [Fix] Fix logic in HTML processing FSM
* [Fix] Fix parsing of the compound mailto urls
* [Fix] Fix processing captures from pcre2
* [Fix] Fix removing from khash
* [Fix] Fix stuctured headers pushing
* [Fix] Further fix for i386 compilation
* [Fix] Improve duplicate settings error reporting
* [Fix] Lua: task:remove_result didn't work in some cases
* [Fix] Output service parts as well
* [Fix] Phishing: Deal with phishing + redirected URL
* [Fix] Phishing: Fix finding domains in the phishing map
* [Fix] Plug memory leak by using mempool for a copied address
* [Fix] Properly find the request and the number of requested entries
* [Fix] Rbl: Fix inversed logic of the url_full_hostname
* [Fix] Read file maps if they were not pre-read during preload
* [Fix] Restrict x86_64 assembly to x86_64
* [Fix] Return a real number of recipients when dealing with aliases
* [Fix] Rework unshedule DNS request function
* [Fix] Support definition of ungrouped symbol in conf file, use group info from lua or other conf file
* [Fix] Unschedule DNS request when clearing IO channel
* [Fix] When checking for phishing, we need to convert punicode -> UTF8, not vice versa
* [Fix] lua_cfg_transform - actions without score (discard)
* [Fix] lua_cfg_transform - silly break break actions
* [Fix] ratelimit - symbol per bucket
* [Project] BIMI: Fix helper integration issues
* [Project] Further DNS over TCP architecturing
* [Project] Rdns: Add more functions for TCP based requests
* [Project] Rdns: Add preliminary reading logic for TCP channels
* [Project] Rdns: Add reaper for inactive TCP connections
* [Project] Rdns: Add timeout logic for TCP requests
* [Project] Rdns: Do not treat TCP channels failure as fatal
* [Project] Rdns: Fix TCP connection mess
* [Project] Rdns: Fix TCP stuff cleanup
* [Project] Rdns: Fix various ownership issues
* [Project] Rdns: Implement TCP writing logic
* [Project] Rdns: Initial support of TCP IO channels
* [Project] Rdns: More fixes in TCP handling
* [Project] Rdns: Restore the previous EDNS0 size
* [Project] Rdns: Send truncated replies via TCP
* [Project] Rdns: Unregister TCP requests
* [Rework] Allow to restore SSL handlers after keepalive pooling
* [Rework] Allow to set a different behaviour for actions from settings
* [Rework] Include SSL flag into keepalive hash
* [Rework] Make `rspamadm dmarc_report` default behaviour more sane
* [Rework] Mempool: Use explicit alignment
* [Rework] Rdns: Use faster and more compact hash table for DNS requests
* [Rework] Rework SSL flag operations
* [Rework] Take disabled flag into account
* [Rework] Timeouts are now global per event and not reseted by IO activity
* [Rework] Use xxh3 as a default hash and fix memory/alignment issues
* [Rules] Fix old rules to stop global functions usage
* [Rules] Fix symbol for DKIM temporary failure
* [Rules] Remove ancient and inefficient rules
* [Rules] Slightly reduce MULTIPLE_FROM score
3.1: 01 Nov 2021
* [Feature] Add junk_threshold for autolearn
* [Feature] Add neural test command
* [Feature] Antivirus: Allow to set fake eicar patterns for testing AV engines
* [Feature] Lua_cdb: Add cdb building interface
* [Feature] Ratelimit: Add per bucket configurations
* [Feature] S3: Allow to store structured data in messagepack
* [Fix] Add concept of uncancellable events to prevent use-after-free
* [Fix] Add temporary guard to prevent linked list exploitation
* [Fix] Another rework of the ucl hashing
* [Fix] Another try to fix references safety
* [Fix] Another try to fix rspamd_text passing in the selectors
* [Fix] Avoid copy for received structure as it has raw C pointers
* [Fix] Avoid dangling reference
* [Fix] Correctly check numeric URLs in URL DNS lists
* [Fix] Delete the correct pointer type
* [Fix] Dmarc: Always lowercase domain
* [Fix] Fix compilation of the hyperscan databases with errors
* [Fix] Fix hash table lookup
* [Fix] Fix http message flag shift
* [Fix] Fix parsing of the from_hostname when it is an IP address
* [Fix] Fix parsing of the unquoted attributes in HTML
* [Fix] Fix passing of rspamd_text in selectors pipelines
* [Fix] Fix rubbish QP sequences decoding
* [Fix] Fix some complicated case with the closing tags parsing
* [Fix] Fix the case when l tag is too small
* [Fix] Html: Fix the case where only bgcolor is explicitly set
* [Fix] Libucl: Fix deletion from ucl objects
* [Fix] Namespace and add metadata for OpenMetrics, fix interleaving
* [Fix] Plug memory leak in http settings reload
* [Fix] Preserve SPF top record in the mempool variable
* [Fix] Remove aarch64 GC64 workaround
* [Fix] Remove bogus G_LIKELY
* [Fix] Spf: Do not parse non TXT DNS replies as TXT replies
* [Fix] Try to use on_connect/on_disconnect callbacks to handle internal Redis failures
* [Fix] buffer overflow in rspamc counters
* [Fix] fix static building
* [Fix] lua_scanners - message_min_words logic
* [Fix] src/lua/lua_mimepart.c: fix null dereference
* [Project] Add constant iterators
* [Project] Add helper library to handle mime strings in a more safe matter
* [Project] Add preliminary support of CDB bayes dump
* [Project] Add trim operations
* [Project] Allow mempool allocated mime strings
* [Project] Cdb: Finish backend implementation
* [Project] Cdb: Fix configuration load
* [Project] Cdb: Use shared data between cdb statfiles
* [Project] Cdb: continue statistics backend implementation
* [Project] Finish received headers rework part
* [Project] Move C++ specific declarations to C++ header
* [Project] Rework received headers parsing to C++
* [Project] Start using of the new received structure
* [Project] Start work on cdb backend
* [Rework] Further rework of the redis pool
* [Rework] Redis_pool: fix issues found
* [Rework] Rework learn and add classify condition
* [Rework] Save invisible content to a separate buffer
* [Rework] Start rewriting of the redis pool logic
* [Rules] Improve zero font rule
3.0: 19 Aug 2021
* [Conf] Align ARC scores with DKIM scores
* [CritFix] Neural: Fix sorting application
* [Feature] Add a simple dumper for bayes tokens
* [Feature] Add lua_maps.fill_config_maps function
* [Feature] Add preliminary exporter to AWS S3
* [Feature] Add preliminary restore bayes support
* [Feature] Add race condition protection against hs_helper restarts
* [Feature] Add rspamd_utf8_strcmp utility
* [Feature] Add zstd streaming API
* [Feature] Allow to log severity level explicitly
* [Feature] Allow to save and show attachment name when inserting AV scan results
* [Feature] Allow to sort urls for Lua
* [Feature] Allow to specify different timeouts/retransmits for fuzzy rules
* [Feature] Aws_s3: Allow to compress data stored
* [Feature] CMakeLists.txt: Change check and run-test to use rspamd-test-cxx * fixes #3807
* [Feature] Dmarc_report: allow sending reports in batches
* [Feature] Fuzzy_check: Allow to disable subject when making short text hash
* [Feature] Lua_cryptobox: Add keyed ssl hash functions via HMAC
* [Feature] Lua_task: Add get_urls_filtered method
* [Feature] Make monitored checks less frequent
* [Feature] Milter_headers: Add x-rspamd-pre-result header
* [Feature] Neural: Allow to balance FP/FN for the network
* [Feature] Ppopagate monitored errors from rbl module
* [Feature] Pyzor calculate score dynamically Count - WL-Count of default_score in percent
* [Feature] Rbl: Distinguish flattened and non-flattened selectors in RBL requests
* [Feature] Re-add pyzor support
* [Feature] Settings: add ip_map check and rework structure slightly
* [Feature] Spamassassin: Allow to set the default priority for SA scores
* [Feature] Strip smtp comments from message id
* [Feature] add SYSTEM_ZSTD cmake option To use the system zstd instead on the bundled version
* [Feature] external_relay plugin
* [Feature] rspamadm clickhouse neural_train subcommand
* [Fix] #3400 milter_headers: fix inverted logic for extended_headers_rcpt
* [Fix] ASN: fix _FAIL symbol for when main symbol is disabled
* [Fix] Add a special logic for text part with no text extraction
* [Fix] Add diacritics flag for several eu languages
* [Fix] Another FSM fix to accomodate possibility of multiple consequent ?
* [Fix] Avoid curse of dynamic array referencing
* [Fix] Avoid reinitialising neural settings
* [Fix] Check remain before processing TXT records
* [Fix] Enable error multiplier on http errors
* [Fix] Finally rework parsing entities logic
* [Fix] Fix '==' parsing in the content type attributes parser
* [Fix] Fix IPv6 expansion for SPF macros
* [Fix] Fix Mozilla Message-ID detection
* [Fix] Fix an edge case in BITCOIN_ADDR rule
* [Fix] Fix brain-damaged behaviour when http request has a custom Host header
* [Fix] Fix check of limits in email address parsing
* [Fix] Fix copy&paste error and rework
* [Fix] Fix expressions logic for and/or and float values
* [Fix] Fix fuzzy retransmits
* [Fix] Fix http maps with no or invalid expires data
* [Fix] Fix last quote character parsing in the content-type state machine
* [Fix] Fix normalisation flags propagation
* [Fix] Fix overflow when appending many broken tags
* [Fix] Fix parsing of rfc2047 tokens with '?' inside
* [Fix] Fix phishing flag set
* [Fix] Fix rfc2047 embedded into rfc2231 pieces in special headers
* [Fix] Fix round-robin rotation
* [Fix] Fix searching for symbols
* [Fix] Fix storing of the regexps inside variant
* [Fix] Fix tokenization near exceptions
* [Fix] Fix visibility calculations
* [Fix] Html: Attach inline tags to the structure
* [Fix] Html: Do not treat empty tags as block tags
* [Fix] Ical: Do not extract urls from all flags using merely specific ones
* [Fix] Initialise symcache even if it cannot be loaded properly
* [Fix] Lua_fuzzy: Remove text parts check when checking image dimensions
* [Fix] Lua_maps: Fix adjustments for the map type in the complex map definitions
* [Fix] Lua_task: Fix deleted symbols in has_symbol/get_symbol
* [Fix] Move metric and symcache link from validation to the init stage
* [Fix] Oletools: Another try to fix table sorting
* [Fix] One more default behaviour fix
* [Fix] Phishing: Rework urls processing
* [Fix] RBL: was missing some config schema
* [Fix] Replies: Fix 'Reply-To' handling in task:get_reply_sender
* [Fix] Rework metrics handling
* [Fix] Save symcache on exit
* [Fix] Selectors: Filter nil elements in lists
* [Fix] Selectors: Properly fix implicit tostring for nils
* [Fix] Try to fix some broken code in DMARC reporting plugin
* [Fix] Urls: Fix processing of html urls when it comes to the flags
* [Fix] Use proper buffer length
* [Fix] Various visibility fixes
* [Fix]: ASN: dns cb func should also return in case of an error
* [Project] Add a simple css rule definition
* [Project] Add css style skeleton
* [Project] Add css syntax (adopted from ebnf)
* [Project] Add css_selectors
* [Project] Add doctest unit testing library
* [Project] Add expected library
* [Project] Add fmt library for simple string ops
* [Project] Add fu2 library to better functions abstractions
* [Project] Add hashing method
* [Project] Add parsers skeleton
* [Project] Add preliminary support of vcard parser
* [Project] Add process exceptions for invisible text
* [Project] Add some methods for css parser
* [Project] Allow static libstdc++
* [Project] Another whitespace hack
* [Project] CSS: Various fixes in the declarations and values parsing
* [Project] Cpp: Add robin-hood hash map library
* [Project] Css: Add AST debug
* [Project] Css: Add colors conversion functions
* [Project] Css: Add dimensions handling
* [Project] Css: Add display value support
* [Project] Css: Add frozen library from https://github.com/serge-sans-paille/frozen/
* [Project] Css: Add opacity support
* [Project] Css: Add parser helpers to simplify debugging
* [Project] Css: Add preliminary stylesheet support
* [Project] Css: Add rules processing functions and tests
* [Project] Css: Add simple selectors unit tests
* [Project] Css: Add some c++ unit tests
* [Project] Css: Add some debug methods
* [Project] Css: Add some debug statements for the css parser
* [Project] Css: Add some logical skeleton for declarations parser
* [Project] Css: Add url/function tokens
* [Project] Css: Allow at rules parsing
* [Project] Css: Declarations parsing logic skeleton
* [Project] Css: Enable conditional css parsing support from the HTML parser
* [Project] Css: Finish generic lexer cases
* [Project] Css: Fix HSL conversion
* [Project] Css: Fix minus parsing
* [Project] Css: Fix parser consumers nesting
* [Project] Css: Fix parsing of the qualified rules
* [Project] Css: Fix rules merging
* [Project] Css: Further fixes to lexer
* [Project] Css: Further steps to parse css colors + rework
* [Project] Css: Further work on parser's methods
* [Project] Css: Implement backlog of css tokens
* [Project] Css: Implement numbers and ident parsers
* [Project] Css: Implement simple css selectors lookup
* [Project] Css: Implement styles merging
* [Project] Css: Make debug strings json like to simplify tests
* [Project] Css: Minor adjustments
* [Project] Css: More meat to the lexer
* [Project] Css: Move some of the tests to the doctest
* [Project] Css: Projected a parser
* [Project] Css: Properties attachment logic
* [Project] Css: Remove ragel from build targets (maybe keep for reference)
* [Project] Css: Rework css block structure
* [Project] Css: Rework flags of css properties
* [Project] Css: Rework tokens structure
* [Project] Css: Several fixes + tests
* [Project] Css: Simplify checks
* [Project] Css: Simplify debug code
* [Project] Css: Start css selectors parsing logic
* [Project] Css: Start semantic parsing for rules
* [Project] Css: Start stylesheet implementation
* [Project] Css: Tidy up lambdas
* [Project] Css: rework tokeniser
* [Project] Dmarc: Add dmarc report tool (WIP)
* [Project] Dmarc: Add munging configuration
* [Project] Dmarc: Add preliminary munging logic
* [Project] Dmarc: Fix header removal
* [Project] Dmarc: Fix munging logic
* [Project] Dmarc: Use full recipient address instead of a domain map
* [Project] Dmarc: Use zlists for dmarc reports
* [Project] Dmarc_report: Add message generation logic
* [Project] Dmarc_report: Add preliminary sending support
* [Project] Fix lua bindings
* [Project] Fix xml/sgml tags processing
* [Project] Handle new modification
* [Project] Html/CSS: Add transform from a CSS rule to html block
* [Project] Html/CSS: Link html and css styles
* [Project] Html/CSS: Switch styles parsing to css parser
* [Project] Html/Css: Fix some issues found
* [Project] Html/Css: Implement visibility rules for a block
* [Project] Html: Add more tests cases and fix some more corner issues
* [Project] Html: Add rows display type support
* [Project] Html: Allow decode entities function to normalise spaces + unit tests
* [Project] Html: Another rework of the tags structure
* [Project] Html: Another try to fix unbalanced cases
* [Project] Html: Fix crossing spans
* [Project] Html: Fix parent propagation
* [Project] Html: Further rework of the html parsing stuff
* [Project] Html: Implement logic for tags pairing
* [Project] Html: Implement rawtext state machine
* [Project] Html: Insert closing tags as well :(
* [Project] Html: More fixes
* [Project] Html: More fixes
* [Project] Html: More spaces logic fixes
* [Project] Html: One more attempt to write text content
* [Project] Html: Replace \0 in html content
* [Project] Html: Rework img/a tags handling
* [Project] Html: Rework propagation method
* [Project] Html: Rework tags placement
* [Project] Html: Rework transparency logic
* [Project] Html: Support 'hidden' attribute
* [Project] Html: Try another approach to append tags content
* [Project] Html: Try to deal with bad unknown tags properly
* [Project] Lua_aws: Add canonicalisation utility
* [Project] Lua_aws: Add function to produce AWS Authorisation header
* [Project] Lua_aws: Implement request signing
* [Project] Lua_mime: Add lua_mime.modify_headers routine
* [Project] Lua_task: Add modify_header method
* [Project] Lua_task: Allow to extract modified headers
* [Project] Make unescape code public for unit testing
* [Project] More fixes for closed tags
* [Project] More fixes to calculations
* [Project] Rework API for the modified headers
* [Project] Rework html visibility rule
* [Project] Skeleton of the css library
* [Project] Start headers modification API structure
* [Project] Start working on AWS Lua API
* [Project] Use lua_mime to modify headers
* [Project] Use modified headers on dkim signing
* [Project] Use string_view to constexpr variant unpacking
* [Rework] Add composites manager concept
* [Rework] Add tags definitions
* [Rework] Allow C code to be compiled with C++ compiler
* [Rework] Clickhouse: Store url flags
* [Rework] Composites: Rewrite the composites logic
* [Rework] Composites: Start rework of the composites framework
* [Rework] Dmarc: Move check policy function to the common utils
* [Rework] Dmarc: Rework reports keys structure
* [Rework] Further work to make html content private
* [Rework] Html/CSS: Remove css C bindings as they are useless now
* [Rework] Html/CSS: Rework Lua bindings
* [Rework] Html/Css: Start rework of the html blocks
* [Rework] Html: Add images processing logic
* [Rework] Html: Add traverse function
* [Rework] Html: Another steps to get rid of gnode
* [Rework] Html: Convert to variant
* [Rework] Html: Deal with the utf_content part
* [Rework] Html: Final rework part for the html processing code
* [Rework] Html: Fix Lua bindings
* [Rework] Html: Forgot to add the internal include
* [Rework] Html: Further html urls rework
* [Rework] Html: Further rework of the tags content extraction
* [Rework] Html: Make parameters as a vector again
* [Rework] Html: Move blocks part
* [Rework] Html: Move images processing stuff
* [Rework] Html: Rework lua bindings
* [Rework] Html: Start html text extraction rework
* [Rework] Html: Start refactoring of the html tags handling
* [Rework] Html: Start removing of GNode stuff
* [Rework] Html: Start rework of the html content structure
* [Rework] Lua_magic: Try to detect text parts with 8bit characters for non-utf8 encodings
* [Rework] Move HTML url functions and rework them
* [Rework] Move and adopt entities handling logic
* [Rework] Move common and rarely used dmarc code to the library
* [Rework] Move compression routines outside of rspamd_util library
* [Rework] Move entities/tags handling
* [Rework] Phishing: Split from redirectors usage
* [Rework] Redesign html blocks propagation logic
* [Rework] Remove tag name string
* [Rework] Rename phished url to a linked url
* [Rework] Reorganize dmarc plugin and remove unsupported reporting code
* [Rework] Reputation: Use more flexible types in get/set functions
* [Rework] Require proper C++ environment for Rspamd build
* [Rework] Rework extended urls output
* [Rework] Rework tags parsing machine
* [Rework] Slightly improve old regexp API
* [Rework] Start conversion of the redis pool code to c++
* [Rework] Try to resolve failed upstreams more agressively
* [Rework] Use C++ utf8 library with unit tests to trim whitespaces
* [Rework] Use C++ version for unicode normalisation
* [Rework] Use C++ version of the lua threads pool
* [Rules] Add raw addresses to MULTIPLE_FROM options
* [Rules] Another fix to HTTP_TO_HTTPS rule
* [Rules] Do not trigger HTML_SHORT_LINK_IMG on external images
* [Rules] Extend FORGED_X_MAILER
* [Rules] Extend OLD_X_MAILER
* [Rules] Fix CTYPE_MIXED_BOGUS for text attachments
* [Rules] Fix FPs for CTYPE_MIXED_BOGUS
* [Rules] Fix HTTP_TO_HTTPS rule
* [Rules] Fix HTTP_TO_HTTPS rule
* [Rules] Fix zerofont rule (partially)
* [Rules] Micro-optimize X_PHP_EVAL
* [Rules] Reduce default weight for R_MISSING_CHARSET
2.7: 08 Jan 2021
* [Conf] Add R_DKIM_PERMFAIL to the metric
* [CritFix] Dkim: Fix simple canonicalisation if multiple signatures are presented
* [CritFix] Fix controller paths normalisation
* [Feature] Add INVALID_DATE rule
* [Feature] Add controller endpoint for training neural
* [Feature] Add sanity checks for actions thresholds
* [Feature] Add support of '==' and '!=' in Rspamd expressions
* [Feature] Composites: Improve composite atoms parser
* [Feature] Docker: use Debian slim variant
* [Feature] Elastic: Add some missing fields
* [Feature] Extract text from img alt attributes
* [Feature] Improve charset detection logic
* [Feature] Lua_clickhouse: Add optional row callback for large selections
* [Feature] Lua_dns_resolver: Add idna_convert_utf8 method
* [Feature] Lua_mime: Add ability to do multipattern replacement
* [Feature] Lua_trie: Allow to report start of the match
* [Feature] Multimap: support adding map values as extra options
* [Feature] Neural: Move PCA learning to a subprocess
* [Feature] RBL: support matching content/image URLs only
* [Feature] RBL: support use of multiple selectors
* [Feature] Reputation: Allow to specify ip masks
* [Feature] Support SMIME signed messages container
* [Feature] Support multiple conditions for symbols
* [Feature] Support ping in milter mode
* [Feature] Support rspamd_text in selector regexps
* [Feature] Use own daemonization routine
* [Feature] Vadesecure: Implement settings_outbound feature as recommended by Vade
* [Feature] `rspamadm clickhouse` command
* [Feature] allow hyperscan for aarch64
* [Fix] Allow to set priorities between post init scripts
* [Fix] Allow to use maps for strings that are not zero terminated
* [Fix] Apply max_lua_urls limit for emails as well
* [Fix] Arc: Fix CV check on signing
* [Fix] Arc: Fix signing of the broken ARC chains
* [Fix] Clickhouse: escape carriage return
* [Fix] Composites: Allow partial match
* [Fix] Deduct type of a table methods
* [Fix] Do not load errored hyperscan database
* [Fix] Do not process links in ignored html tags
* [Fix] Fix ClamAV result for cached encrypted file (#3395)
* [Fix] Fix canonicalisation when l= tag is presented
* [Fix] Fix flag shift
* [Fix] Fix handling of skip/skip_process http flags
* [Fix] Fix html attachments checks
* [Fix] Fix issue with pushing binary formats to Lua strings
* [Fix] Fix logging for rspamadm
* [Fix] Fix off-by-one with init check
* [Fix] Fix parsing of escape characters in quoted pairs
* [Fix] Fix pushing ucl strings with \0 inside
* [Fix] Fix quoted-printable soft newlines bugged case
* [Fix] Fix settings in case actions are set to null (#3415)
* [Fix] Fix several issues with auth results producing
* [Fix] Fix smtp comments exclusion
* [Fix] Fix smtp date syntax definition
* [Fix] Fix substring search in case if srchlen == inlen
* [Fix] Fix text selectors
* [Fix] Honour `systemd` setting when logging to console (#3514)
* [Fix] Html: Add entities collisions prevention logic (e.g. for mathml entities)
* [Fix] Lua_auth_results: Quote potentially bad values in AR header
* [Fix] Multimap: Fix flags usage
* [Fix] Multimap: Fix scoring for combined maps
* [Fix] Plug GList * leak in redis pool
* [Fix] RBL: allow for multiple matches of the same label if types are different
* [Fix] Rely on libev checks for file maps
* [Fix] Restore simple dkim canonicalisation mode
* [Fix] Return MimeCharset as we work with emails...
* [Fix] Spamassassin: Fix pcre_only flags
* [Fix] Spamassassin: Preserve 'pcre_only' flag when dealing with regexp replacements
* [Fix] Try to fix GError leak
* [Fix] Try to fix a mess with settings loading by adding priorities
* [Fix] Try to move setings initialisation to a later stage
* [Fix] Use dup fd in milter handler to avoid races with the proxy
* [Fix] Use message pointer to avoid obsolete data to be cached
* [Project] Rbl: Migrate to `checks`
* [Project] Rbl: Move config code outside of the plugin
* [Project] Ressurect empty prefilters as connection filters
* [Project] Support connection filters registration from Lua
* [Rework] Add final cleanup logic
* [Rework] Add preliminary support of hyperscan caching for re maps
* [Rework] Add stale cache removal
* [Rework] Clickhouse: Improve performance
* [Rework] Distinguish between strict config test mode
* [Rework] Furhter logging improvements
* [Rework] Milter_headers: improve extended_headers_rcpt support
* [Rework] Move parsers to a separate lua library
* [Rework] Neural: Skip composite symbols
* [Rework] Rbl: Rework defaults logic
* [Rework] Some tunes to cache saving
* [Rework] Track maps origins
* [Rework] Use full crypto hash for regexp maps
* [Rules] Remove broken rule
2.6: 30 Sep 2020
* [Conf] Add missing symbols
* [Conf] Add missing symbols
* [Conf] Fix fat-fingers typo
* [Conf] Fix wrong comment in options.inc
* [Conf] Neural: Fix the default name for max_trains
* [Conf] Register a known symbol
* [Conf] Spf: Add R_SPF_PERMFAIL symbol
* [CritFix] Arc: Fix ARC validation for chains of signatures
* [CritFix] Distinguish socketpairs between different fuzzy workers
* [CritFix] Fix IDNA dots parsing
* [CritFix] Fix test assertion method
* [CritFix] Fix usage of crypto_sign it should be crypto_sign_detached!
* [Feature] Add BOUNCE rule
* [Feature] Add controller plugins support and selectors plugin
* [Feature] Add maps query method
* [Feature] Add minimal delay to fuzzy storage
* [Feature] Add multiple base32 alphabets for decoding
* [Feature] Add preliminary support of BCH addresses
* [Feature] Add query_specific endpoint
* [Feature] Allow multiple base32 encodings in Lua API
* [Feature] Allow to specify nonces manually
* [Feature] Controller: Allow to pass query arguments to the lua webui plugins
* [Feature] Fuzzy_check: Add gen_hashes command
* [Feature] Fuzzy_check: Add weight_threshold option for fuzzy rules
* [Feature] Implement address retry on connection failure
* [Feature] Improve limits in pdf scanning
* [Feature] Initial support of subscribe command in lua_redis
* [Feature] Lua_cryptobox: Add secretbox API
* [Feature] Lua_text: Add encoding methods
* [Feature] Milter_headers: Allow to activate routines via users settings
* [Feature] PDF: Add timeouts for expensive operations
* [Feature] Preliminary maps addon for controller
* [Feature] Split pdf processing object and output object to allow GC
* [Feature] Support BLIS blas library
* [Feature] Support input vectorisation by recvmmsg call
* [Feature] Support multiple base32 alphabets
* [Feature] add queueid, uid, messageid and specific symbols to selectors [Minor] use only selectors to fill vars in force_actions message
* [Feature] allow variables in force_actions messages
* [Feature] extend lua api
* [Fix] #3249
* [Fix] Allow to adjust neurons in the hidden layer
* [Fix] Another try to fix email names parsing
* [Fix] Arc: Allow to reuse authentication results when doing multi-stage signing
* [Fix] Arc: Fix bug with arc chains verification where i>1
* [Fix] Arc: Sort headers by their i= value
* [Fix] Change neural plugin's loss function
* [Fix] Deal with double eqsigns when decoding headers
* [Fix] Default ANN names in clickhouse
* [Fix] Disable reuseport for TCP sockets as it causes too many troubles
* [Fix] Disable text detection heuristics for encrypted parts
* [Fix] Distinguish DKIM keys by md5
* [Fix] Distinguish type from flags in register_symbol
* [Fix] Dmarc: Unbreak reporting after cf2ae3292ac93da8b6e0624b48a62828a51803c9
* [Fix] Do not flag pre-result of virus scanners as least if action is reject
* [Fix] Do not use GC64 workaround on 32bit platforms, omg
* [Fix] Exclude damaged urls from html parser
* [Fix] Fix FREEMAIL_REPLYTO_NEQ_FROM_DOM
* [Fix] Fix FROM_NEQ_ENVFROM
* [Fix] Fix FWD_GOOGLE rule (#1815)
* [Fix] Fix adding of the empty archive file for gzip
* [Fix] Fix aliases in forged recipients and limit number of iterations
* [Fix] Fix authentication results insertion
* [Fix] Fix calling of methods in selectors
* [Fix] Fix clen length for hiredis...
* [Fix] Fix endless loop if broken arc chain has been found
* [Fix] Fix false - operation
* [Fix] Fix get_urls table invocation
* [Fix] Fix group based composites
* [Fix] Fix headers passing in rspamd_proxy
* [Fix] Fix incomplete utf8 sequences handling
* [Fix] Fix lua_next invocation
* [Fix] Fix lua_parse_symbol_type function logic
* [Fix] Fix multiple listen configuration
* [Fix] Fix occasional encryption of the cached data
* [Fix] Fix parsing boundaries with spaces
* [Fix] Fix passing of methods arguments
* [Fix] Fix poor man allocator algorithm
* [Fix] Fix regexp selector and add flattening
* [Fix] Fix rfc base32 encode ordering (skip inverse bits)
* [Fix] Fix rfc based base32 decoding
* [Fix] Fix sockets leak in the client
* [Fix] Fix storing of the original smtp from
* [Fix] Fix types check and types usage in lua_cryptobox
* [Fix] Fix unused results
* [Fix] Fuzzy_check: Disable shingles for short texts (really)
* [Fix] Ical: Fix identation grammar
* [Fix] Improve part:is_attachment logic
* [Fix] Mmap return value must be checked versus MAP_FAILED
* [Fix] One more fix to skip images that are not urls
* [Fix] Pdf: Support some weird objects with no newline before endobj
* [Fix] Rbl: Fix ignore_defaults in conjunction with ignore_whitelists
* [Fix] Restore support for `for` and `id` parts in received headers
* [Fix] Segmentation fault in contrib/lua-lpeg/lpvm.c on ppc64el
* [Fix] Skip spaces at the boundary end
* [Fix] Slashing fix: fix captures matching API
* [Fix] Spamassassin: Rework metas processing
* [Fix] Store reference of upstream list in upstreams objects
* [Fix] Understand utf8 in content-disposition parser
* [Fix] Unify selectors digest functions
* [Fix] Use `abs` value when checking composites
* [Fix] Use strict IDNA for utf8 DNS names + add sanity checks for DNS names
* [Fix] Use unsigned char and better support of utf8 in ragel parser
* [Fix] add missing selector_cache declaration
* [Project] Add `L` flag for regexps to save start of the match in Hyperscan
* [Project] Add `lower` method to lua_text
* [Project] Add a simple matrix Lua library
* [Project] Add implicit bitcoincash prefix
* [Project] Add linalg ffi library for prototyping
* [Project] Add methods to append data to fuzzy requests
* [Project] Add routine to call a generic lua function
* [Project] Add ssyev method interface
* [Project] Add tensors index method
* [Project] Add text:sub method
* [Project] Allow rspamd_text based selectors
* [Project] Allow to specify re_conditions for regular expressions
* [Project] Attach extensions to the binary fuzzy commands
* [Project] Bitcoin: BTC cash addresses needs some checksum validation
* [Project] Cleanup the redis script
* [Project] Convert bitcoin rules to the new regexp conditions feature
* [Project] Detect memrchr in systems that supports it
* [Project] Do not listen sockets in the main process
* [Project] Implement 'probabilistic' learn mode for ANN
* [Project] Implement BTC polymod in C as it requires 64 bit ops
* [Project] Implement bitcoin cash validation in a proper way
* [Project] Implement extensions logic for fuzzy storage
* [Project] Implement symbols insertion in multiple results mode
* [Project] Lua_text: Add method memchr
* [Project] Neural: Add PCA loading logic
* [Project] Neural: Fix PCA based learning
* [Project] Neural: Fix matrix gemm
* [Project] Neural: Further PCA fixes
* [Project] Neural: Implement PCA in learning
* [Project] Neural: Implement PCA learning
* [Project] Neural: Implement PCA on ANN forward
* [Project] Neural: Implement PCA serialisation
* [Project] Neural: Start PCA implementation
* [Project] Neural: Use C version of scatter matrix producing
* [Project] Preliminary support of lua conditions for regexps
* [Project] Preliminary usage of the reuseport
* [Project] Process composites separately for each shadow result
* [Project] Remove old code
* [Project] Rework scan result functions to support shadow results
* [Project] Rework some more functions to work with shadow results
* [Project] Some more fixes
* [Project] Start results chain implementation
* [Project] Support fun iterators on rspamd_text objects
* [Project] Support multiply, minus and divide operators in expressions
* [Project] Tensor: Move scatter matrix calculation to C
* [Rework] Allow to specify exat metric result when adding a symbol
* [Rework] Change and improve openblas detection and usage
* [Rework] Close listen sockets in main after fork
* [Rework] Further rework of lua urls extraction API
* [Rework] Lua_cryptobox: Allow to store output of the hash function
* [Rework] Lua_task: Add more methods to deal with shadow results
* [Rework] Modernize logging for expressions
* [Rework] Remove empty prefilters feature - we are not prepared...
* [Rework] Remove old FindLua module, disable lua fallback when LuaJIT is enabled
* [Rework] Rework and refactor forged recipients plugin
* [Rework] Rework expressions processing
* [Rework] Rework fuzzy commands processing
* [Rework] Rework url flags handling API
* [Rework] Rework urls extraction
* [Rework] Split operations processing and add more debug logs
* [Rework] Update zstd to 1.4.5
* [Rework] Use google-ced instead of libicu chardet as the former sucks
* [Rework] add alias util:parse_addr for util:parse_mail_address
* [Rework] get rid of util:parse_addr duplicating the util:parse_mail_address, replace where used
* [Rules] Allow prefix for bitcoin cash addresses
* [Rules] More fixes for bitcoin cash addresses decoding
* [Rules] Refactor bleach32 addresses handling
2.5: 01 Apr 2020
* [Conf] Mark Rspamd emailbl as ignore whitelist
* [Conf] RBL: Add missing emails = true option
* [Feature] Add support for scripts in fuzzy storage
* [Feature] Arc: Add whitelisted_signers_map option
* [Feature] Implement hosts file processing
* [Feature] Neural: Introduce classes bias that allows non-equal classes learning
* [Feature] Update libev to 4.33
* [Fix] Another brain damage html standard adoptions
* [Fix] Another fix for brain damaged obs-fws state
* [Fix] Fix flags that caused force_actions failure
* [Fix] Fix logging issue
* [Fix] Fix lua symbols scores registration when config does not define scores
* [Fix] Fix opaque maps logic
* [Fix] Fix parsing of the html tags with no spaces after attributes
* [Fix] Fix some corner cases in urls parsing, add limits
* [Fix] Fix tlds extraction if custom composition rules are used
* [Fix] Fix variables replacement in mempool
* [Fix] Improve base64 detection
* [Fix] Normalize dynamic scores in ANN correctly
* [Fix] Plug memory leak introduced by #3153
* [Fix] Stat_redis_backend: Fix memory leak and simplify learn path
* [Fix] Try hard to deal with ghost workers
* [Fix] metadata_exporter default formatter
* [Rework] Change the way to extract URLs when dealing with alternative parts
* [Rework] Fix various url extraction issues
* [Rework] Re cache: Load compiled hyperscan in the main process as well
* [Rework] Re cache: Load hyperscan early
* [Rework] Rework URL structure: adjust tld part
* [Rework] Rework URL structure: host field
* [Rework] Rework URL structure: more structure optimisations
* [Rework] Rework URL structure: user field
* [Rework] URL: Another update for urls extraction logic
* [Rework] Urls: Improve query urls handling
* [Rework] Urls: adopt html related stuff
* [Rework] Urls: more rework of the urls sets
* [Rework] Urls: process query urls in HTML urls correctly
* [Rework] Urls: rework urls hash structure
* [Rework] Urls: update lua libraries
* [Rework] Use multiple search tries for different url extraction types
2.4: 26 Feb 2020
* [CritFix] Fix parsing of the content type attributes
* [Feature] Clickhouse: Add extra columns support
* [Feature] Rbl: Add url_compose_map option for RBL rules
* [Fix] 'R' flag is for all headers regexp
* [Fix] Allow to reset settings id from Lua (e.g. because of the priority)
* [Fix] Avoid collisions in mempool variables by changing fuzzy caching logic
* [Fix] Avoid strdup usage for symbols options
* [Fix] Do not trust stat(2) it lies
* [Fix] Filter all options for symbols to have sane characters
* [Fix] Fix all headers iteration
* [Fix] Fix allowed_settings for neural
* [Fix] Fix listen socket parsing
* [Fix] Fix maps expressions evaluation
* [Fix] Fix sentinel connections leak by using async connections
* [Fix] Fix smtp message on passthrough result
* [Fix] Fix tld compositon rules
* [Fix] Fuzzy_storage: Do not check for shingles if a direct hash has been found
* [Fix] Lua_mime: Do not perform QP encoding for 7bit parts
* [Fix] Neural: Distinguish missing symbols from symbols with low scores
* [Fix] Support listening on systemd sockets by name
* [Project] Add lua_urls_compose library
* [Project] Allow to set a custom log function to the logger
* [Project] CDB maps: Start making cdb a first class citizen
* [Project] Clickhouse: Add extra columns concept
* [Project] Fix urls composition rules, add unit tests
* [Project] Unify cdb maps
* [Rework] Logger infrastructure rework
* [Rework] Refactor libraries structure
* [Rework] Rework SSL caching
* [Rework] Update snowball stemmer to 2.0 and remove all crap aside of UTF8
2.3: 04 Feb 2020
* [Conf] SPF is no longer a C module
* [Conf] Update spamtrap map path example
* [CritFix] Fix html entities decoding
* [CritFix] Fix re cache when mix of pcre and hyperscan is used
* [Feature] Allow milter code to deal with multiple headers
* [Feature] Antivirus: Add avast support
* [Feature] Dkim_signing: Allow to sign via milter_headers
* [Feature] Implement content hashes
* [Feature] Lua_text: Add regexp split iterator method
* [Feature] Lua_text: Implement flattening of the input tables
* [Feature] Send quit command to Redis
* [Feature] Speed up is_ascii function
* [Feature] Spf: Add external_relay option
* [Fix] Avoid double escaping
* [Fix] Fix O(N^2) algorithm
* [Fix] Fix arc seal validation
* [Fix] Fix base tag processing according to stupid HTML renderer behaviour
* [Fix] Fix dealing with `\0` in ucl strings and JSON
* [Fix] Fix gpg parts misdetection
* [Fix] Fix ignored symbols exporting
* [Fix] Fix processing of numeric url's
* [Fix] Fix processing of the closed tcp connections
* [Fix] Fix regexp type check for pcre2
* [Fix] Fix urls encode function
* [Fix] Fix urls shifting when doing decode to include separators
* [Fix] Fix white on white rule and add is_leaf flag
* [Fix] Further fixes in charset detection
* [Fix] Ignore diacritics in chartable module for specific languages
* [Fix] Limit size of symbols options by max_opts_len option
* [Fix] More fixes in html tag content calculations
* [Fix] Plug memory leak in fuzzy storage
* [Fix] Process high priority settings even if settings/id has been specified
* [Fix] Select a different upstream on last retransmit
* [Fix] Treat soft hyphen as zero width space
* [Fix] Try harder to watch the lifetime of the key_stat
* [Fix] Use ipv6-mapped-ipv4 addresses in radix trie
* [Project] Add logic to break execution when processing symbols*
* [Project] Add methods to set specific content for mime parts from Lua
* [Project] Lua_content: support PDF files
* [Project] Move dns_tool to using of the rspamd_spf from FFI module
* [Project] Preliminary SPF plugin in Lua
* [Project] Show debug stat for memory pool
* [Project] Some rework about specific data that is now tagged
* [Project] Start reworking of the mempool structure
* [Rework] Allow to add userdata as symbols options
* [Rework] Change mime part specifics handling
* [Rework] Move LRU SPF cache from spf plugin
* [Rework] Rework HTML tags content attachment
* [Rework] Rework options hash structure
* [Rework] Start lua_content library
* [Rework] Stop using of uthash for http headers
* [Rework] Use faster hashing approach for memory pools variables
* [Rules] Add PDF related rules
2.2: 19 Nov 2019
* [Conf] Antivirus: Fix the default config
* [Feature] Add verdict library in lua
* [Feature] Allow exception when choosing upstream
* [Feature] Allow to disable symbols from the metric config
* [Feature] Allow to limit maps per specific worker
* [Feature] Always validate Rspamd protocol output
* [Feature] Antivirus: Add preliminary virustotal support
* [Feature] Clickhouse: Rework Clickhouse collection logic
* [Feature] Improve base64 usage
* [Feature] Shutdown timeout is now associated with task timeout
* [Fix] #3129 Multiple classifiers on redis working incorrectly
* [Fix] Allow real upstreams configuration
* [Fix] Another try to fix slow callbacks and timers
* [Fix] Check results of write message as SSL can bork them
* [Fix] Clickhouse: Avoid potential races in collection
* [Fix] Clickhouse: Fix periodic script
* [Fix] Fail DNS upstream on each retransmit attempt
* [Fix] Fix consistent hashing when upstreams are marked inactive
* [Fix] Fix issues found
* [Fix] Fix off-by-one in retries for the proxy
* [Fix] Fix termination
* [Fix] Fix upstreams exclusion logic
* [Fix] Fix utf8 validation for symbols options and empty strings
* [Fix] Oops, fix maps reload
* [Fix] Rbl: Allow utf8 lookups for IDN domains
* [Fix] Sigh, another try to fix brain-damaged openssl
* [Project] Add fast utf8 validation library
* [Project] Use own utf8 validation instead of glib
* [Rework] Another phase of finish actions rework
* [Rework] Further cmake system rework
* [Rework] Further isolation of the controller's functions
* [Rework] Make cmake structure more modular
* [Rework] Move cmake modules to a dedicated path
* [Rework] Replace controller functions by any scanner worker if needed
* [Rework] Rework final scripts logic
* [Rework] Rewrite rspamd_str_make_utf_valid function
2.1: 28 Oct 2019
* [Conf] Update neural.conf
* [CritFix] Fix dkim verification for multiple headers listed
* [Feature] Add support of uudecode
* [Feature] Allow to explicitly set events backend
* [Feature] Implement configurable limits for SPF lookups
* [Feature] Lua_scanners: Use lua magic for inclusion/exclusion logic
* [Feature] Multimap: Do not check files in office archives
* [Feature] Neural: Add sampling when storing training vectors
* [Feature] SPF: Allow to disable AAAA checks in configuration
* [Feature] Spf: Add limits configuration support
* [Feature] Store etag in cached HTTP maps + better logging
* [Feature] Support segwit BTC addresses, fix LTC verification
* [Feature] Support uuencoding
* [Fix] Add configurable number of threads for OpenBLAS
* [Fix] Add workaround for ragel 7 in hyperscan related maps code
* [Fix] Another fix for numeric urls parsing
* [Fix] Correct EMA time calculations
* [Fix] Do not treat archives as text
* [Fix] Do not use strdup on data extracted from lua
* [Fix] Fix a failure calcuating URL reputation.
* [Fix] Fix crash due to constructors init order
* [Fix] Fix crash on parts with no cd
* [Fix] Fix empty prefilters that require mime structures
* [Fix] Fix event loop creation
* [Fix] Fix issues sending DMARC reports.
* [Fix] Fix misprint
* [Fix] Fix saving of the file maps
* [Fix] Fix size calculations when converting from utf16
* [Fix] Fix support of disable_monitoring in rbl
* [Fix] Fix use-after-free
* [Fix] Fix zip files check to relax requirements
* [Fix] Important hiredis fixes
* [Fix] Lot's of fixes in maps check logic
* [Fix] Lua_tcp: Deal with temporary fails on write
* [Fix] Lua_tcp: Make write errors fatal and rework error handlers
* [Fix] Meta: Filter some more values
* [Fix] Neural: Add protection agains infinities
* [Fix] Oops, fix math.huge invocation
* [Fix] Plug memory leak
* [Fix] Sigh, another email to string fix
* [Fix] Try to fix another ownership race in ssl connection
* [Fix] Uuencode: Fix parsing of corrupted uuencode
* [Fix] lua_scanners - razor rename need_check function
* [Rework] Require CMake 3.9 to work, remove manual lto crap
2.0: 11 Oct 2019
* [Conf] Add BROKEN_HEADERS_MAILLIST composite
* [Conf] Add path to greylist-whitelist-domains.inc
* [Conf] Clarify documentation in the config files
* [Conf] Introduce maps.d directories
* [Conf] Log settings id by default
* [Conf] Make LEAKED_PASSWORD_SCAM a composite rule again
* [Conf] Move all surbl/emails rules to rbl
* [Conf] Register new Spamhaus codes
* [Conf] Remove configs for deleted modules
* [Conf] Remove surbl parts, fix hash_format attribute
* [Conf] Show autolearn sample
* [Conf] Slashing: Change default stats backend to Redis
* [Conf] Surbl: Utilise new `check_emails` option
* [Conf] Update header
* [Conf] Use multi-prefixes RBLs in the default config
* [CritFix] Deal with case-sensivity in Content-Disposition parser
* [CritFix] Eliminate old endpoint
* [CritFix] Fix case sensivity when parsing Content-Type
* [CritFix] Fix loading of DKIM public keys
* [CritFix] Fix procesing of urls
* [CritFix] Fix whitelisting when both spf and dkim are required to be valid
* [CritFix] Langdet: Fix language detection where no stop words found
* [Feature] Add description to the groups
* [Feature] Add limit for number of URLs in Lua
* [Feature] Add logging of groups to the log_format
* [Feature] Add lua_smtp library
* [Feature] Add maps cache and type refinement
* [Feature] Add p0f scanner
* [Feature] Adopt emails module to use lua_maps
* [Feature] Allow options matching in composites
* [Feature] Allow selectors in rbl module
* [Feature] Allow to output group results
* [Feature] Asn: Allow to use bgpdump when NET::MRT is broken
* [Feature] Calculate tokens occurrences distribution
* [Feature] Clickhouse: Add authenticated user and settings id columns
* [Feature] Clickhouse: Store groups data
* [Feature] Clickhouse: Utilise LowCardinality feature
* [Feature] Implement Redis prefixes registration logic
* [Feature] Implement settings id propagation between deps
* [Feature] Improve AV results caching
* [Feature] Improve autolearning
* [Feature] Improve logging locking logic (remove it actually)
* [Feature] Improve settings processing
* [Feature] Langdet: Limit number of stop words to be checked
* [Feature] Libucl: Allow to sort keys in ucl objects
* [Feature] Lua_config: Extend get symbols method
* [Feature] Lua_maps: Allow static maps for key-value pairs
* [Feature] Lua_mimepart: Add function filter_words
* [Feature] Lua_selectors: Add `words` selector
* [Feature] Lua_selectors: Add sort and uniq transform functions
* [Feature] Lua_selectors: Allow table arguments for selectors
* [Feature] Lua_tcp: Add preliminary support of SSL connections
* [Feature] Lua_trie: More flexible API
* [Feature] Lua_util: Add filter_specific_url function
* [Feature] Lua_util: table_digest can now recursively traverse tables
* [Feature] Maillist: Improve detection
* [Feature] Maps: Allow caching for complex maps
* [Feature] Monitored: Support random lookups
* [Feature] Multimap: Add combined maps prototype
* [Feature] Multimap: Add dependend maps via redis keys selectors
* [Feature] Multimap: Allow multiple email addresses matches
* [Feature] Multimap: Also check detected charset when do filename checks
* [Feature] Output number of messages processed to proctitle
* [Feature] Perform clean SSL shutdown
* [Feature] Performance: Do not use base64 SIMD version for bad inputs
* [Feature] RBL: Support bit results in replies
* [Feature] RBL: Support type specific prefixes
* [Feature] Ratelimit: Consider number of SMTP recipients
* [Feature] Rbl: Add ability to check urls
* [Feature] Rbl: Add resolve_ip based RBLs
* [Feature] Rbl: Make config checks much more strict
* [Feature] Rbl: Support per-rule whitelists
* [Feature] Rbl: Support process script
* [Feature] Rbl: Support replyto addresses
* [Feature] SURBL: Allow to check email domains
* [Feature] Selectors: Add `list` generator
* [Feature] Selectors: Add `specific_urls` extractor
* [Feature] Selectors: Add flatten function
* [Feature] Selectors: Support filter_map and apply_map functions
* [Feature] Store Clickhouse data outside of lua alloc
* [Feature] Support caching for encrypted files and macros
* [Feature] Support images when extracting urls
* [Feature] Support more hyperscan flags
* [Feature] Support protocol flags
* [Feature] URL: Apply stringprep to hostnames to filter garbage
* [Feature] Upstreams: Add lazy resolving logic to all upstreams
* [Feature] Upstreams: Set noresolve flag on numeric upstreams
* [Feature] Use `scores` in apply section
* [Feature] Use maps logic from lua_maps for multimap
* [Feature] Use random monitored in rbl module
* [Feature] lua_scanners - add Razor support
* [Fix] Add another safe-guard in urls processing
* [Fix] Add debug to ssl, fixed write hangs
* [Fix] Add missing groups to C callback symbols
* [Fix] Add more checks for ghosts symbols
* [Fix] Allow to enable or add new actions via settings
* [Fix] Allow to set 0 size for spf/dkim caches
* [Fix] Another bunch of fixes towards protocol mess
* [Fix] Another fix to deal with bad URLs
* [Fix] Arc: Another bunch of fixes for arc signing
* [Fix] Arc: More arc signing fixes
* [Fix] Avoid another overflow in fpconv