Release 1.5.3

Release 1.5.3

* [Conf] Add composite for hacked wordpress phishing
* [CritFix] Fix base64 decoding when there are unparseable characters
* [Feature] Additional symbol metadata in metadata exporter
* [Feature] Add method to get protocol reply from Lua
* [Feature] Add symbols when tagged rcpt/sender are normalised
* [Feature] Add task:get_symbols_all() function
* [Feature] Allow multiple formats of DKIM signing key
* [Feature] Allow to cache and use flexible protocol reply
* [Feature] Allow to set one_shot flag from register_symbol
* [Feature] Allow to skip certain types of hashes when learning fuzzy
* [Feature] Cache and insert scan time into the protocol
* [Feature] Detect newlines in rspamc --mime
* [Feature] DKIM signing: support use of maps
* [Feature] Greylist: Support excluding low-scoring messages from greylisting
* [Feature] Implement lua history in controller
* [Feature] Implement redis history querying
* [Feature] Preliminary implementation of redis history plugin
* [Feature] Support using request headers in settings
* [Fix] Change default template to deal with non-ASCII characters
* [Fix] Deal with lists of maps in whitelist module
* [Fix] DKIM signing: use domain-specific signing key
* [Fix] Do not reallocate completed zstd buffer
* [Fix] Do not use local_addrs in proxy
* [Fix] Fix crash when resolver is undefined
* [Fix] Fix double free when closing lua_tcp connections
* [Fix] Fix for lua 5.3
* [Fix] Fix freeing of arrays iterators
* [Fix] Fix issue with task:get_symbol and symbols with no metric
* [Fix] Fix log line duplication in `rspamadm grep`
* [Fix] Fix memory corruption on termination
* [Fix] Fix out-of-bound access in base64 decode
* [Fix] Fix ratelimit + greylisting
* [Fix] Fix subject rewriting
* [Fix] Fix task:set_recipients function
* [Fix] Fix URI_COUNT_ODD rule
* [Fix] Follow the traditional symbols conventions in RCPT_COUNT rule
* [Fix] Greylist: Suppress greylist action for whitelisted hosts too
* [Fix] Metadata exporter: use rule-specific settings for emails
* [Fix] Properly set missing fields in exporter
* [Fix] Proxy: max_retries option
* [Fix] RCPT_COUNT fixes
* [Fix] Rework HAS_X_PRIO rule to match symbols conventions
* [Fix] Update issues in ac-trie
* [Fix] Use optimised base64 decoding in DKIM
* [WebUI] Add preliminary v2 history parser
* [WebUI] Allow different history parsers
* [WebUI] Display symbols
* [WebUI] Rework history v2 function

Signed-off-by: Vsevolod Stakhov <vsevolod@highsecure.ru>