Update rspamd to 0.9.5

0.9.5:
	* Avoid double free when extending HTTP message.
	* Fix double free if multiple classifiers are defined.
	* Fix misprint in spamassassin plugin.
	* Fix cpuid invocation on i386.
	* Fix ownership issues for zero-copy decode.
	* Allow __len metamethod on rspamd{text}.
	* Add base64 decoding lua utility.
	* Fix build on FreeBSD
	* Skip spaces at the beginning of mime messages.
	* DBL_ABUSE_REDIR should not have significant weight.
	* Allow to split by lua_regexp rspamd{text} objects.
	* Allow to specify custom stop pattern for lua_tcp.

0.9.4:
	* Fix critical bugs in tokenization algorithm
	* Write unit tests for tokenization
	* Add documentation for lua_tcp
	* Switch off legacy tokenization by default.
	* Fix critical bugs in words normalization
	* Add lua bindings to tokenizer.
	* Implement storing of HTTP headers inside task
	* Add lua API to accerss HTTP headers data
	* Implemented base64 encoding suitable for MIME
	* Use caseless hash and equal functions for HTTP request headers.
	* Improve debian architectures support (by @dottedmag)

0.9.3:
	* Revert incorrect regexp change that broke the default rules
	* Fix lua_tcp module

0.9.2:
	* Fix error on spawning unique workers.
	* Add preliminary version of generic LUA TCP requests API.
	* Use lua 5.1 if luajit is not available (Arm64, PowerPC, s390x etc)
	* Fix fuzzy mime strings with only type.
	* Improve thunderbird sanity checks.
	* Fix critical bug on matching regular expressions.
	* Make hiredis optional dependency.
	* Fix multiple bugs in daemon reloading

0.9.1:
	* Restore utf8 validation for regular expressions to avoid crashes
	* Fix symbols displaying in the interface
	* Add symbol groups to the interface
	* Fix maps ID parsing in the controller
	* Add multimap and regexp modules documentation
	* Backport fixes from libucl
	* Fix debian package (by @dottedmag)
	* Rework XXH32 invocations

0.9.0:
	* Add support of the fast and secure protocol level encryption:
		- curve25519 is used for key exchange;
		- chacha20/poly1305 cryptobox construction for bulk encryption;
		- zero latency overhead;
		- encrypting and balancing HTTP proxy worker
	* Rework expressions and create new expressions library:
		- aggressive optimizations based on the abstract syntax tree;
		- abstract expressions support (regular expressions, functions, lua modules
		  composites and so on)
		- New comparision and '+' operators support
		- New greedy algorithm to minimize execution time of expressions and
		  all symbols
		- Dynamic expressions benchmark and reoptimizations
	* Many improvements to the LUA API:
		- reworked logger module allowing to do pretty print of the most of lua
		  types (including tables and userdata classes)
		- reworked lua redis and lua HTTP to support more features
		- added opaque type for passing large text chunks without copying
		- new regexp module with many auxiliary functions (e.g. `re:split`)
	* LuaJIT is now the default requirement for rspamd allowing to speed up lua
	  execution by a large margin (however, plain lua is still supported)
	* New plugins:
		- spamassassin rules plugin that allows to load and re-use the most of
		  SA rules natively
		- DMARC plugin that evaluates SPF and DKIM policies to the domain policies
		- many old plugins has been reworked to implement new features and improve
		  stability
	* New aho-corasic trie implementation from @mischasan that allows to load and
	  use hundreds of thousands of patterns with no influence on load
	* Support of PCRE JIT and PCRE JIT fast path modes that significantly improves
	  the performance of regular expressions if supported by PCRE
	* New URLs parser and extractor:
		- removed legacy code that was useless for url finding
		- reworked algorithms of URL parsing for more precise and accurate results
		- added top-level-domains tree from http://publicsuffix.org
		- improved emails parsing
		- removed many phishing false positives due to TLD tree check
	* New statistics infrastructure:
		- created a separate layer of statistic library
		- improved OSB-Bayes by re-weighting tokens according to the original
		  academic paper and `crm114` implementation, which reduced false positives
		  rate significantly
		- created learn cache to avoid double learning of statistics and providing
		  an efficient way to re-learn class for a message
		- created abstract layers for different statistics backends
		- implemented new tokenization algorithms with fast or secure (siphash)
		  hashes to generate statistics features
	* Reworked utf8 tokenization that previously corrupted all UTF8 words (minor
	  incompatibility with old fuzzy hashes with utf-8 symbols)
	* SPF module has been completely rewritten to support complex cases of
	  `include` and `redirect` within SPF records
	* DKIM module now supports multiple signatures
	* Controller passwords can now be stored encrypted by `PBKDF2-HMAC` in the
	  configuration file
	* Many hand-written HTTP clients has been replaced with the common rspamd
	  http module
	* New test framework:
		- import lua `telescope` test framework
		- add unit tests for many rspamd modules and routines
		- create a unit test for each possible bug found
		- use luajit ffi for testing C code
		- added preliminary support of functional testing by creating tasks from lua
	* Randomize hash seed to avoid certain hash tables vulnerabilities
	* Documentation improvements:
		- added documentation for the vast majority of rspamd modules
		- added documentation for rspamd protocol
		- added documentation for the most of rspamd LUA extensions
	* Fixed tonns of bugs and memory leaks
	* Added tonns of minor features

0.8.3:
	* Various critical fixes in distribution (by @dottedmag and @fatalbanana)
	* Fixed bugs in url detector to parse certain patterns
	* Add default host and helo for a client
	* Some sanity checks for tokenizer and classifier
	* Reiterate on systemd support
	* Fix missing symbol registration
	* Add support of spamc compatible output
	* Filter double-dots in rbl.lua validate_dns (by @fatalbanana)
	* Update ucl submodule due to critical bugfix

0.8.2:
	* Create fuzzy db if it does not exist
	* Fix: Centos init script: configtest() (by @AlexeySa)
	* Enable one_shot for RECEIVED_SPAMHAUS_XBL - Fixes #102 (by @fatalbanana)
	* Update Exim patch (by @fatalbanana)
	* Fix processing of unix sockets.
	* Allow applying settings to authenticated users (by @fatalbanana)
	* Make settings priorities work as documented (by @fatalbanana)
	* Fix race condition in symbols planner
	* Add DNSWL_BLOCKED symbol (by @fatalbanana)
	* Make Exim pass usernames to rspamd (by @fatalbanana)
	* Update RBL module (by @fatalbanana):
		- fix indentation;
		- collapse loops;
		- avoid calling for un-needed information;
		- allow disabling RBLs for authenticated users
	* once_received.lua: Fix indentation & add exclusion for authenticated users (by @fatalbanana)
	* hfilter.lua: Add exclusion for authenticated users (by @AlexeySa)
	* Updates to hfilter rules (by @AlexeySa)
	* Set empty <> user or addr for msgs without FROM (by @eneq123)
	* Fix: attempt to index field '?' (a nil value) (by @eneq123)
	* Fix: if not exist Date-header (by @AlexeySa)
	* Add task:get_content() method.
	* rbl.lua: Ignore private IP space (by @fatalbanana)
	* Allow to check radix maps from lua by rspamd{ip}
	* Make local exclusions configurable per-RBL (by @fatalbanana)
	* Add rspamd_config:radix_from_config() (by @fatalbanana)
	* Support emails dnsbl in rbl (by @fatalbanana)
	* Complete rework of url extraction logic
	* Allow customizations for unix sockets. (fixes #182)
	* Set lua path according to rspamd settings.
	* Import lua-functional for plugins stuff.
	* Completely rewrite multimap plugin in functional style.
	* Fix FORGED_MUA_THUNDERBIRD_MSGID (fixes #186)
	* Check IPv6 addresses at dnswl.org and Spamhaus whitelist (by @fatalbanana)
	* Add lowercase utility for utf8 strings.
	* Various fixes to build system
	* Updated debian configuration infrastructure (by @dottedmag)


(wiedi)