+1.6.6: 16 Feb 2018
+ * [CritFix] Add sanity guards for badly broken HTML
+ * [CritFix] Another errors path handling fix
+ * [CritFix] Fix ARC chain verification
+ * [CritFix] Fix crash in milter errors handler
+ * [Feature] Allow to insert headers into specific position
+ * [Feature] Allow to receive signing keys from mempool vars
+ * [Feature] Authentication-Results: support hiding usernames
+ * [Fix] Another try to deal with #1998
+ * [Fix] Another try to fix #1998
+ * [Fix] Better handling of the legacy protocol
+ * [Fix] Check decoded headers sanity (e.g. by excluding \0)
+ * [Fix] Deal with nan and inf encoding in json/ucl
+ * [Fix] Deal with URLs wrapped in [] in text parts
+ * [Fix] DKIM signing: allow for auth_only to be false
+ * [Fix] Do not crash on empty subtype
+ * [Fix] Do not fail rbl plugin when there are no received or emails
+ * [Fix] Do not skip the last character
+ * [Fix] Do not try to dereference last character
+ * [Fix] Do not try to sign unknown domains
+ * [Fix] Exim Received header protocol parsing
+ * [Fix] First load selector_map and path_map. And only return false when domain not found if try_fallback is false
+ * [Fix] Fix bad archive characters stripping
+ * [Fix] Fix comparision
+ * [Fix] Fix connecting to a unix socket in rspamadm statconvert
+ * [Fix] Fix empty headers simple canonicalization
+ * [Fix] Fix extra hits in PCRE mode for regular expressions
+ * [Fix] Fix parsing of the per-user script
+ * [Fix] Fix processing of skip-hashes in fuzzy storage
+ * [Fix] Fix Redis timeout setup
+ * [Fix] Fix sanity checks on macro value
+ * [Fix] Fix text splitting: stack overflow (too many captures)
+ * [Fix] Fix urls/emails distinguishing found in queries
+ * [Fix] F-PROT Antivirus: only check return code to determine infection
+ * [Fix] Metadata exporter: check IP sanity
+ * [Fix] Multimap: received: filtering of artificial header
+ * [Fix] Plan new event on HTTP errors
+ * [Fix] Plug another possible memory leak
+ * [Fix] Remove hop-by-hop headers in proxy
+ * [Fix] Sanitize IP in history redis
+ * [Fix] Setting check_local / check_authed in plugins (#1954)
+ * [Fix] Settings: avoid checking invalid IP (#1981)
+ * [Fix] Try harder in passing IPv6 addresses
+ * [Fix] WebUI: use relative path for savemap (#1943)
+ * [WebUI] Fix message count in throughput summary (#1724)
+ * [WebUI] Fix NaNs display on Throughput graph
+ * [WebUI] Restore passwordless login support (#2003)
+
1.6.5: 22 Oct 2017
* [CritFix] Another portion of tokenization fixes
* [CritFix] Fix memory leak in spf caching logic