Release 1.6.5

Release 1.6.5

* [CritFix] Another portion of tokenization fixes
* [CritFix] Fix memory leak in spf caching logic
* [CritFix] Fix milter commands pipelining
* [CritFix] Fix newlines detection
* [Feature] Filter nan and inf when adding scores
* [Feature] Implement headers flags in mime parser
* [Feature] Support Expires header when using HTTP maps
* [Fix] Actively load skip hashes map in fuzzy storage
* [Fix] Add workaround for IPv6 in sendmail
* [Fix] Authentication Results: Fix SPF smtp.mail_from
* [Fix] Check for magic when checking for an archive
* [Fix] Deal with another case when processing exceptions
* [Fix] Deal with URLs with no slashes after protocol
* [Fix] Do not allow garbadge when checking url domain
* [Fix] Do not ignore short words
* [Fix] Do not strip last character in the last word
* [Fix] Do not treat script content as text
* [Fix] Erase unknown HTML entities
* [Fix] Fix another tokenization issue
* [Fix] Fix DKIM forgeries via multiple headers
* [Fix] Fix emails detection
* [Fix] Fix empty threshold check in greylisting module
* [Fix] Fix enormous scores for R_WHITE_ON_WHITE
* [Fix] Fix loading of per-user redis backend for statistics
* [Fix] Fix multiple headers in DKIM headers list
* [Fix] Fix obscured url in format user@@example.com
* [Fix] Further tokenization fixes
* [Fix] Load skip map from all processes as shared cache is unavailable
* [Fix] Lowercase words
* [Fix] Milter headers: skip_local / skip_authenticated settings
* [Fix] Milter headers: X-Spamd-Result header if X-Virus ran first
* [Fix] Ratelimit: fix whitelisted_rcpts matching
* [Fix] Some more fixes towards emails detection
* [Fix] SpamAssassin: Fail check_freemail_header if regexp didn't match
* [Fix] Use greylisting threshold in greylisting module

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