path: root/ChangeLog

1.2.1:
	* Add list support to `mime types` module configuration (by @moisseev)
	* Allow symbols params to be printed in logs
	* Fix `MIME_BAD_ATTACHMENT` false positives for MDN/DSN
	* Fix crashes on arm32
	* Do not classify message if some class is missing
	* Fix cryptobox cleanup
	* Remove multipart/report from bad mime types (#569)
	* Improve logging for fuzzy hashes
	* Show map URLs in webui
	* Sort symbols in webui

1.2.0:
	* New dynamic updates plugin
	* Regular expressions map support
	* Faster radix trie algorithm
	* Faster siphash for AVX2 supporing CPUs (used in fuzzy hashes)
	* PCRE2 support
	* Allow quoted and slashed keys in map
	* Add proper support of DNS resolvers balancing (#552)
	* Rework includes and configuration system for better local changes support
	* New keypairs framework for signing and encryption
	* Added support for dynamic modules and workers
	* Allow to dump configuration with help comments
	* Rework once_received module
		- Fix priority for `good_hosts`
		- If a good host has been found do not add once_received symbols
		- Fix priorities for strict once_received
		- Add ability to whitelist IP addresses
	* Implement support of signed maps for HTTP and file maps
	* Add command to sync fuzzy storage (#533)
	* Rework system of symbols and actions registration
		It is possible now to use priorities when adding symbols to metrics and
		override scores for symbols with lower priority with the scores with
		high priority.
	* Add auth support and db selection for redis stats
	* Improve composite rules application
	* Add ignore_received option
	* Fix critical issue with inconsistent resorting
	* Fix `all` in spf redirects
	* Add punycoded versions for IDN domains (#554)
	* Improve sorting order for symbols cache
	* Add lockless logging for processes management
	* Allow to specify flags for metric symbols
	* Load images height and width from style attribute (#538)
	* Override DNS requests limits for SPF and DKIM
	* Fix resetting symbols to their default values in WebUI
	* Improve configuration agility for redis stats
	* Allow to set db and password for redis in stat_convert
	* Import the latest libucl
	* LUA API changes:
		- Add rspamd_version function to LUA API
		- Add lua_cryptobox module
		- Add lua_map module
		- Add task:set_metric_action lua API method
		- Fix race condition in lua_tcp module
		- Fix a lot of issues in lua_redis module
		- Rework and abstract lua maps API
		- Add util.strlen_utf8 lua function
		- Add lua functions for caseless comparison
		- Allow optional symbols registration
		- Add config:add_map table form method, add regexp maps
		- Add task:has_urls method
		- Add task:has_flag method
		- Add html tags methods to lua_html
		- Add task:get_dns_req
	* Plugins changes:
		- Add support for WLBLEval SA plugin
		- Use caseless comparison in SA and DMARC plugins
		- Allow SA plugin to set scores for rspamd symbols
		- Add regexp maps support to multimap
		- Allow filenames match in multimap
		- Add more filters for the existing map types
		- Fix html images rules to reduce FP rates
	* New rules:
		- LONG_SUBJ - too long subject
		- MIME_BAD_ATTACHMENT - bad attachement type
		- RDNS_NONE - no reverse DNS record for sender's IP
		- Fix MISSING_MIMEOLE rule for modern OE
	* Many other bugfixes, memory leaks plugs thanks to:
		- Coverity scan
		- New gcc-6 warnings
		- valgrind manual iterations
	* Documentation improvements:
		- FAQ list: https://rspamd.com/doc/faq.html
		- Reworked quick start guide
		- Added documentation for all active modules
	* Other changes:
		- Dropped Ubuntu Vivid support
		- Added Ubuntu Xenial support
		- Rework build system for rspamd and rmilter

1.1.4:
	* Print traceback on lua errors in lua config
	* Fix leaks in lua error paths
	* Improve 'R_EMPTY_IMAGE' rule
	* Fix metas memoization in SA plugin
	* Properly set `flag` in fuzzy replies
	* Fix arguments order
	* Fix issue with out-of-boundary reading
	* Fix issues found by coverity
	* Same result checking error found by coverity
	* Fix varargs processing (found by coverity)
	* Fix error in printing hex
	* Reduce weights for some hfilter patterns
	* Add aliases for task:get_from_ip:
		- task:get_addr
		- task:get_from_addr
		- task:get_ip
	*  Rework once_received module
		- Fix priority for `good_hosts`
		- If a good host has been found do not add once_received symbols
		- Fix priorities for strict once_received
		- Add ability to whitelist IP addresses
	* Fix `MISSING_MIMEOLE` rule for modern OE
	* Treat meta tags as embedded tags (#501)

1.1.3:
	* Fix DSN rules when SMTP from is unavailable
	* Fix statconvert routine to avoid lua module usage
	* Set a sane quark for configtest to avoid NULL to be printed in logs
	* Support c11 if available
	* Fix parsing of ip:port strings
	* Add more diagnostic for lua subr errors
	* Fix task:set_from_ip lua method
	* Add basic routines for digital signatures
	* Add tool for digital signatures
	* Add plain open file API method for atomic open
	* Fix parsing nested braces inside logger vars
	* Pre filters now actually skip processing
	* Add pre-filter mode for multimap
	* Switch to apache 2 license

1.1.2:
	* Fix stat_cache closing
	* Add checkpoints to sqlite3 learn cache
	* Do not recompile lua generated headers all the time
	* Increase number of messages learned
	* Fix issues with dual stack and hfilter
	* Disable MID checks for hfilter by default
	* Fix cache definitions in multiple classifier and no type
	* Don't crash if learn cache failed to initialize
	* Fix googlegroups support in maillist plugin
	* Rework flags LUA API:
		- Allow to check for a specific flag
		- Add `learn_spam`, `learn_ham` and `broken_headers` flags
		- Unify internal functions
	* Add `BROKEN_HEADERS` rule
	* Add support for forged confirmation headers (by @AdUser)
	* Allow `any`, `mime` and `smtp` for get_from/get_recipients
	* Add mime types checking plugin
	* Add rule to detect spammers attempts to cheat mime parsing
	* Rework parsing of IP addresses in configuration (better IPv6 support)
	* Add `util.parse_mail_address` function to LUA API
	* Add lua sqlite3 module
	* Implement synchronous redis call
	* Ratelimit: avoid possible indexing of nil value (Fixes #498) (by @fatalbanana)
	* Add stat_convert command to convert stats tokens from sqlite3 to redis
	* Implement redis advanced lua api with pipelining
	* Fix memory leak on redis stat (#500)
	* Fix user/language learn count in sqlite statistics (#496) (by @fatalbanana)
	* Fix build with custom pcre
	* Fix fuzzy relearning (#498)
	* Improve planning of asynchronous tasks
	* Show slow rules in log
	* Add warning for slow regexps
	* Add base32 decode/encode routines to lua util
	* Allow converting of learn cache from sqlite to redis
	* Add methods to check if a messages has from/rcpts
	* Improve and fix multimap plugin:
		- Restore 'header' maps
		- Add filters for headers
		- Add 'email:addr', 'email:user', 'email:domain' and 'email:name' filters
		- Add generic regexp filters
	* Disable reload command in rc scripts
	* Improve runtime CPU dispatcher for libcryptobox
	* Add preliminary support of digital signatures via ed25519
	* Add detection for RDRAND support
	* Print configuration of crypto on start
	* A in SPF presumes AAAA lookup as well

1.1.1:
	* Fix duplicated XBL symbol
	* Reduce log severity for ratelimit missing servers
	* Fix XBL composite to avoid duplicate symbols
	* Reduce weight of URL_ONLY rule due to FP rate
	* Disable fuzzy hashes from the metadata for now
	* Fix processing of empty messages (#486)
	* Always treat DNS timeouts as temporary fail for SPF
	* Fix issue with SPF double IP stack (#483)
	* Use X-Forwarded-For when checking secure_ip (#488)
	* Fix hash calculation for sqlite stats
	* Fix memory corruption on punycode
	* Fix strings allocation in punycode
	* Fix error message (#491)

1.1.0:
	* Incompatible change: sqlite3 and per_user behaviour:
		Now both redis and sqlite3 follows the common principles for per-user
		statistics:
		1) If per-user statistics is enabled check per-user tokens ONLY
		2) If per-user statistics is not enabled then check common tokens ONLY
		If you need old behaviour, then you'd need to use separate classifier
		for per-user statistics.
	* Implement redis statistics backend and cache
	* Implement autolearning for statistics
	* Reworked statistics architecture from scratch
	* Add hyperscan (https://github.com/01org/hyperscan) engine for regular
	  expressions:
		- add lazy loader for hyperscan databases
		- rework regexp cache to have joint pcre/hyperscan scanning
		- implement hyperscan pre-filter support
		- add compilation guards for bad expressions
		- implement `rspamadm control recompile` command
		- implement hyperscan cache monitoring
		- slides: <https://highsecure.ru/rspamd-hyperscan.pdf>
	* Implement flexible task logging
	* Rework fuzzy worker:
		- it is now possible to run multiple fuzzy workers;
		- implement lazy writing as sqlite3 is bad at concurrent writing;
		- add retries for simple sql commands in fuzzy backend;
		- use fine-grained transactions for fuzzy;
		- implement new multi-pubkeys mode;
		- allow encrypted only storages;
		- rework statistics for fuzzy;
		- add `rspamadm control fuzzystat` command for extended statistics;
		- implement human readable output for the previous command;
		- add condition script for learning fuzzy storage;
	* Various fixes to SPF:
		- fix `redirect` records;
		- fix domains when parsing mx/ptr/a records in includes/redirects;
		- fix issues with multiple addresses in SPF records;
		- ignore SPF results in case of DNS failure;
		- adjust TTL of records when resolving subelements of SPF records;
		- always select `v=spf1` line if it is available
		- do not cache records with DNS failure in subrequests;
		- ignore records with temporary fails during subrequests resolving;
		- fix `RDNS_RC_NOREC` support;
	* Add clang plugin for static analysis:
		- implement static checks for `rspamd_printf` format strings;
	* Add 'allow_raw_input' option for non-mime messages
	* Recognize types using libmagic
	* Fix parsing of IPv6 received headers
	* Add new interface of communication between workers in rspamd
	* Add support for named socketpairs
	* Don't write URLs by default as it is too verbose
	* Set status for HTTP replies
	* Try load `rspamd.conf.override`
	* Implement words decaying for text parts to limit many checks
	* Improve support of SA rules and plugins:
		- add check_for_shifted_date and check_for_missing_to_header eval rules;
		- add 'check_relays_unparseable' support;
		- add `check_for_mime('mime_attachement')` function;
		- use new re_cache interface for all SA rules;
		- add support for `Mail::SpamAssassin::Plugin::MIMEHeader`;
		- add support of 'special' SA headers to `exists` function;
		- fix issue when SA metas contain other metas;
		- fix freemail rules;
	* Many fixes to the URL parser
	* Match any newline character in regexps
	* Fix resolving of upstreams and detection of poor IPv6 configurations
	* Parse upstreams selection algorithm from the configuration line
	* Add `reresolve` command to the control interface
	* Generate fuzzy hashes from task metadata (URLs and headers)
	* Add method to check if IP is local and `local_addrs` option
	* Implement forced timeout for delayed filters
	* Disable fast path of pcre-jit as it seems to be broken
	* Bayes fixes:
		- new normalizer function;
		- really use weights of tokens from the OSB algorithm;
		- restore multiple classifiers support;
	* Rules changes:
		- add `R_SUSPICIOUS_URL` rule that detects obfuscated URL's;
		- improve empty image rule;
		- rework `FORGED_RECIPIENTS` rule;
		- reduce weight of `SUSPICIOUS_RECIPS`;
		- fix `*_NORESOLVE_MX` symbols in hfilter;
		- add `SUBJ_ALL_CAPS` rule with support of UTF8
		- add spamhaus SBL to uribl
		- fix `SUSPICIOUS_RECIPS` and `SORTED_RECIPS` rules
		- remove `R_TO_SEEMS_AUTO` as it generates a lot of FP;
		- add new Message-ID regexp for Thunderbird (by @moisseev);
	* Plugins changes:
		- allow ratelimit plugin to set symbol instead of pre-result
		- support IP DNS black lists for URIBL (e.g spamhaus SBL);
		- drop deprecated SURBL bits (by @fatalbanana)
		- rename `JP_SURBL_MULTI` to `ABUSE_SURBL` (by @fatalbanana)
		- add `SURBL_BLOCKED` (by @fatalbanana)
		- add `CR_SURBL`
		- SURBL: allow fallthrough to default symbol (by @fatalbanana)
		- Settings: fix IP match (by @fatalbanana)
		- SURBL: add missing symbols to metric (by @fatalbanana)
		- allow processing images urls for SURBL
		- unconditionally disable SPF for authenticated users and local networks
	* Rework ratelimit plugin
		- switch to `rates` instead of old and stupid strings to setup;
		- check if a bucket is zero and disable the corresponding limits'
		- turn off all buckets by default;
		- check either `rcpt` or `user` buckets, not all together'
		- document new `rates` and `symbol` options;
		- inform user about what buckets are used in the configuration;
	* Add neural network **experimental** plugin
	* Add a sample script to learn neural network from rspamd logs
	* Add documentation strings support to rspamd:
		- add strings for the main configuration options;
		- document workers options;
		- add internal plugin options;
		- create `rspamadm confighelp` routine;
		- implement human readable output for the previous command;
		- add subtree search support;
		- add keyword search support;
	* Documentation improvements, tutorials section, statistics description
	* Many other minor and major bugfixes not noted here

1.0.11:
	* Fix spf redirects
	* Fix domains when parsing mx/ptr/a records in includes/redirects
	* Fix unfolded base64 encoding
	* Fix GError use-after-free
	* Do not rewrite the original url when using redirector
	* Fix parsing of fragment in urls
	* Fix processing of HTML tags
	* Improve empty image rule
	* Avoid long double type
	* Fix tokens weights in OSB algorithm
	* Improve debugging for bayes

1.0.10:
	* Fix settings application (#416)
	* Fix another issue with fixed strings
	* Fix hash function invocation
	* Use the proper string for make_dns_request in lua_http
	* Fix scan time output
	* Update webui:
		- fix labels for greylisting
		- fix dimension of scan time

1.0.9:
	* Emergency fix in keyed blake2 to fix fuzzy hashes and encrypted password
	* Support passwords longer than 64 symbols

1.0.8:
	* Add function to traverse AST atoms
	* Allow dependencies on rspamd symbols for SA metas
	* Fix memory corruption when timeout is removed in fuzzy check
	* Fix encrypted fuzzy add processing
	* Avoid use-after-free in controller session destructor
	* Use session pool instead of task pool in fuzzy check
	* Fix assembly in i386 mode (#413, #412)

1.0.7:
	* Plugged memory leaks in internet address object & html parser
	* Fixed static build
	* Fixed multiple sigchld processing
	* Fixed deletion of signal events after event processing loop
	* Fixed build on ARM (#404 - reported by @Gottox)
	* Fixed setting the default mask for SPF.
	* Fixed sanitisation of HTTP query values
	* Fixed parsing of the last header in encrypted HTTP messages
	* Additions and fixes for test suite & benchmarks
	* Added openssl aes-256-gcm support to libcryptobox & HTTP server
	* Implemented support for starting multiple HTTP servers
	* Implemented batch accept in HTTP server
	* Added module to get data from HTTP headers (#285 - reported by @msimerson)
	* Added `rspamadm control` command
	* Added ability to sort counters output.
	* Added ability to specify custom headers for rspamc client
	* Fix architecture detection
	* Converted history storage to the UCL format
	* Allow flexible number of rows in history
	* Fix action badges in WebUI
	* Add universal cryptobox hash API
	* Migrated to the optimized blake2b implementation adopted from Andrew Moon
	* Allow explicit loading of specific modules
	* Always load settings module
	* Allow to add symbols from settings
	* Fix double free in the controller fuzzy learn command
	* Avoid endless loop when cannot open sqlite db
	* Updated libucl

1.0.6:
	* Fix build on i386
	* Update CentOS7 service file patch (by @fatalbanana)
	* Fix path to rspamadm in Debian init script (by @fatalbanana)
	* Fix broken '_SC_GETPW_R_SIZE_MAX' on FreeBSD
	* Fix portability issues
	* Use cryptobox chacha for libottery
	* Better support of 32 bit builds
	* Fix header name tokens setup
	* Fix levenstein distance method for words
	* Add workaround for old libevent (#400)
	* Fix microseconds in termination timer
	* Fix some more issues with fixed strings
	* Explicitly test CPU instructions even after CPUID call
	* Do not check out of boundary memory
	* Do not output broken emails
	* Fix unknown symbols registration
	* Handle SIGILL using longjmp
	* Block signals when exiting event loop
	* Fix incorrect allocation size
	* Slightly optimize alignment
	* Restore rspamd -t for compatibility
	* Add more sanity checks for emails

1.0.5:
	* Add rspamd control interface:
		- support `stat` command to get runtime stats of rspamd workers
		- support `reload` command to reload runtime elements (e.g. sqlite3 databases)
	* Rework curve25519 library for modular design:
		- add Sandy2x implementation by Tung Chou
		- fix CPU detection for variables loading assembly
		- add testing for curve25519 ECDH
	* New fixed strings library
	* Add `R_SUSPICIOUS_IMAGES` rule
	* Enable mmap in sqlite3
	* Use new strings in the HTTP code
	* Improve google perftools invocation
	* Improve performance profiling in http test
	* Reorganize includes to reduce namespace pollution
	* Allow specific sections printing in configdump command
	* Rework workers signals handlers to be chained if needed
	* Update socketpair utility function
	* Add control_path option for rspamd control protocol
	* Fix ownership when listening on UNIX sockets
	* Rework signals processing in main
	* Remove extra tools from rspamd (they live in rspamadm now)
	* Remove global rspamd_main
	* Add global timeout for the overall task processing (8 seconds by default)
	* Sanitize NULL values for fuzzy backend
	* Store NM between encrypt/decrypt
	* Add textpart:get_words_count method
	* Fix generic DNS request in lua
	* Tune hfilter weights
	* Add support of IPv6 in hfilter
	* Fix parsing of HTTP headers with IP addresses
	* Sync with the recent libucl
	* Various minor bugfixes

1.0.4:
	* Add configdump routine to rspamadm
	* Implement retransmits for fuzzy_check plugin
	* Fix events processing for learning anf checking fuzzy hashes
	* Avoid dependency on unneeded and uncompatible glib include
	* Add `historyreset` command to the controller
	* Fix loading of tokenizer config from dump (#389)
	* Add sorting hints for the history
	* Allow custom lua scripts for users/languages extraction (#388)
	* Do not add FORGED_RECIPIENTS when 'To' is missing (#387)
	* Do not add R_UNDISC_RCPT when 'To' is missing (#387)
	* Add encryption to fuzzy check plugin
	* Add encryption for fuzzy storage
	* Add new epoch for encrypted fuzzy request
	* Add encryption for `rspamd.com` storage
	* Remove gmime processing for LDA mode as it is deadly broken
	* Add routine to find end of headers position in mime messages
	* Fix LDA headers folding
	* Init libraries in rspamc client as well to avoid locale issues
	* Avoid collision with locally installed includes
	* Allocate and free memory with the same allocator in rspamadm (#385)
	* Preserve expired fuzzy hashes counter
	* Improvements in webui:
		- Add favicon.ico
		- Rework history table
		- Fix sorting for the history
		- Migrate to bootstrap 3 and jquery 2
		- Fix css bugs
		- Add glyphicons
		- Add reset history
		- Improve history buttons
		- Redraw graph to avoid display issues
		- Webui is now MIT licensed to match licensing policy of rspamd

1.0.3:
	* Fix piechart clean slice (#380)
	* Fix controller crashes when GString is reallocated (#381)
	* Correctly set locale before start
	* Set C locale for numeric values
	* Add rspamadm routine:
		- add `pw` command to manage passwords
		- add `help` command for displaying help
		- add `configtest` command to check configuration files
		- add `keypair` command for generating encryption keys
		- add `fuzzy_merge` routine to merge fuzzy sqlite databases
		- add a simple manual page for rspamadm
	* Allow metric registration for composite expressions
	* Add strict mode for configtest
	* Add logger counters
	* Save and show learned messages count (#383)
	* Add `no_stat` flag
	* Add `task:set_flag` and `task:get_flags` (#382)
	* Enable foreign keys in sqlite3
	* Remove orphaned shingles from fuzzy storage
	* Optimize synchronization steps for fuzzy storage
	* Allow delayed conditions registration
	* Add lua API for conditions registering

1.0.2:
	* Fix critical bug in webui that prevents password from being sent
	* Rework webui view:
		- Switch to d3.js for graphs
		- Improve piechart look
		- Rework colors for piechart
		- Fix layout for symbols
		- Fix refresh button
	* Add descriptions for whitelist maps
	* Fix build on arm (#379)
	* Fix issue with the last element in the radix trie
	* Add more tests for radix trie algorithm
	* Allow to extract URLs from query strings of other URLs (#361)
	* Initialize rrd fields before writing to file
	* Fix double free if no password has been specified

1.0.1:
	* Add writing to rrd from the controller
	* Fixed lots of bugs in rrd code
	* Adopt new DNS API in hfilter plugin (by @AlexeySa)
	* Allow only one controller process to manage rrd file
	* Set event base for fuzzy calls
	* Improve fuzzy IO errors logging
	* Add rra extraction function to rrd library
	* Add graph handler to the controller
	* Cache correct passwords to avoid too high CPU usage when working with webui
	* Controller sockets are owned by router do not export them to task
	* Optimize logging by skipping hash table search if it's empty
	* Fix loading issue whith broken statfiles
	* Print assertions from glib to rspamd logger
	* Load legacy `lua/rspamd.local.lua`
	* Update webui with some fixes to learning and scanning

1.0.0:
	* Rework symbols processing:
		- Improve sorting logic for symbols
		- Organize processing into multiple stages
		- Added asynchronous watchers for symbols
		- Added ability to organize dependencies between symbols
	* Fixed URL redirector:
		- Use optimized POE loop
		- Organize dependencies
		- Fix startup
	* New sqlite3 backend:
		- Allow to have per-languages and per-user statistics
		- Allow sqlite3 to be used as statistics backend
	* Store tokenizer configuration within statfiles
	* Improve bayes statistics:
		- Use headers and images metainformation in bayes
		- Suggest using of pre-processed tokens for statistics
		- Fix tokens normalization for OSB algorithm
	* Rewrite url parsing:
		- Fix numerous issues with url extraction and normalization
		- Fix mailto urls
	* Fix settings plugin to allow custom actions scores
	* Improve rbl plugin
	* Allow capturing patterns in rspamd lua regexp library
	* Add GTUBE support
	* Fix spamc legacy support
	* Add DKIM support to RBL module
	* Fix issues with multiple DKIM signatures
	* Fix issue if rspamd cannot create statfiles (#331)
	* Rework parts and task structure:
		- Now text_parts, parts and received are arrays
		- Pre-allocate arrays with some reasonable defaults
		- Use arrays instead of lists in plugins and checks
		- Remove unused fields from task structure
		- Rework mime_foreach callback function
		- Remove deprecated scan_milliseconds field
	* Add ip_score plugin support (not enabled by default):
		- Can check for asn/country and network using DNS lookups
		- Can store and load reputation from redis server
	* Improve PARTS_DIFFER rule to count merely different words
	* New HTML parser:
		- Parses HTML parts using a set of state machines
		- Extracts useful data and exports it to lua functions:
			+ Styles
			+ Images
			+ URLs
			+ Colors
			+ Structure elements
		- Added HTML rules for some checks
	* New version of LUA DNS API
	* Table versions of many functions in LUA API
	* Improve rspamc client:
		- Print execution time
		- Allow executing of external commands and passing output to them
		- Allow mime output mode when rspamc alters message according to rspamd
		  checks and send it to an external command or stdout
	* Allow scanning of local files using HTTP requests
	* Rework configuration system:
		- Rules are now moved from the $CONFDIR to $RULESDIR to avoid ambiguity
		- All modules configurations are now split in $CONFDIR/modules.d/* to
		  simplify upgrades
		- Move hfilter to plugins
		- Allow plugins and rules to define default scores to simplify metrics
		  setup
		- Include overrides for all modules to honor local/automatic parameters
		- Tune scores for many modules
	* Rework and enable DMARC plugin
	* Add whitelist plugin for SPF/DKIM/DMARC based whitelisting
	* Add some common domains to whitelists shipped with rspamd
	* Rework logging:
		- Now each log entry supports module name and a `tag`. Tag is used to
		  identify unique objects (such as tasks) when checking log files
		- It is possible to turn on debugging for the specific modules
		- Systemd logging is fixed
	* Improve spamassassin plugin.
		- Now headers are matched more like SA
		- Improve support of Message-ID
		- Add support of ToCc header type
		- Fix :addr and :name in headers regexps
	* Resurrect rrd support code
	* Save controller stats between restarts
	* Fixed tonns of bugs
	* Added tonns of minor improvements and features
	* Added more unit tests
	* Create functional tests framework
	* Added documentation for missing modules
	* Added rpm/deb repositories and scripts
	* Updated WebUI and libucl externals

0.9.10:
	* Do not dereference null pointer on learning.
	* Fix some extreme cases in BAYES.
	* Add a workaround to avoid bad HTML messages breaking.
	* Build with -O2 flags by default.
	* Add constraints to limit DNS requests count per task.
	* Add workaround for SURBL DNS flood.
	* Set error if rspamd cannot learn anything.

0.9.9:
	* Don't use RWL_SPAMHAUS_WL (unknown result) for whitelisting (by @fatalbanana)
	* Import updated public suffix list (by @fatalbanana)
	* Remove debug message
	* Fix settings (by @fatalbanana)
	* Remove duplicated symbol registration
	* Use WAL for fuzzy storage
	* RBL fixes (by @fatalbanana):
		- silence errors;
		- yield unknown results from RBLs;
		- fix scoring for DNSWL;
		- fix use of RBL name as symbol;
		- ignore RBL names that would not be yielded;
	* Support captures in regular expressions
	* Add captures support to lua_regexp
	* Support dist on FreeBSD and Darwin
	* Add RCVD_IN_DNSWL_NONE as whitelisting exclusion (by @fatalbanana)
	* Multiple fixes to URL detection:
		- support port definition;
		- fix query and path recognition;
		- fix parsing of multiple slashes in URL;
		- fix parsing query just after port;
		- fix path field in `url:to_table` method;
		- improve support of IP based URLs.
	* Set ignore_whitelists = true for RECEIVED_SPAMHAUS_XBL (by @fatalbanana)
	* Add GTUBE support
	* Ignore User header in SA mode

0.9.8:
	* Fix critical bug in bayes classifier (#305)
	* Fix critical bug in RBL module (by @fatalbanana)
	* Fix and rework settings plugin.
	* Fix get_all_opts for a case of non-iterable options.
	* Use tld for redirector's matching.

0.9.7:
	* Add whitelist_exception setting to RBL module (by @fatalbanana)
	* Don't use RWL_MAILSPIKE_POSSIBLE or DNSWL_BLOCKED for whitelisting (by
	  @fatalbanana)
	* Fix extreme cases in bayes classifier.
	* Fix parsing of urls with '?' at the end of hostname.
	* Update interface.
	* Fix number of issues with webui interaction.
	* Fix saving maps.
	* Allow user@ and @domain matches in multimap.
	* Fix issues with bounces From processing.
	* Fix abs/fabs misuse.
	* Fix builds on suse and arch linux distributions.

0.9.6:
	* Fix memory leak if mime cannot be parsed.
	* Fix dkim cache expiration.
	* Fix issues with redirector HTTP response.
	* Fix abnormal connection closing with certains messages with a high score
	  (issue #296)
	* Fix redirector installation.
	* Use specific POE loop for some systems.
	* Fix number of issues in URL redirector.
	* Fix selecting URLs for sending to redirector.

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)

0.8.1:
	* Add sqlite and perl as dependencies for RPM/Debian packages (by @fatalbanana)
	* Remove whitelist.lua from RPM file list (by @fatalbanana)
	* Make Exim pass hostnames to rspamd (by @fatalbanana)
	* Fix building on Fedora (by @fatalbanana)
	* Add toggle for disabling installation of systemd units on Linux (by @fatalbanana)
	* Fix double format rounding that caused output corruption (reported by @fatalbanana)
	* Revert broken change for destructors ordering that led to memory corruption
	* Do not reset symbols case of settings if parsed from lua (reported by @andrejzverev)
	* Fix build on SunOS (by @wiedi)
	* Fix multiple crashes on broken DKIM DNS records
	* Fix critical issue with composites weights removing
	* Fix memory corruption in composites processing code
	* Ignore non-SPF TXT records when parsing SPF includes

0.8.0:
	* New fuzzy check logic:
		- use shingles algorithm for fuzzy matching
		- use blake2 instead of md5 for larger output space
		- combine fuzzy and strict matching
		- allow to organize private storages by means of keys
		- preserve compatibility with previous versions
	* New fuzzy storage:
		- use sqlite instead of own memory based hash tables
		- rework commands interface
		- add conversion from the old format
		- add fuzzy match by shignles
		- support old rspamd versions
	* Add lemmatizing for words used in fuzzy hashes that allows to improve match
	quality by using of the first forms of all words
	* Rework language detection
	* Fix several critical bugs, memory leaks and deadlocks:
		- memory leak in HTML nodes parsing
		- deadlock in logger code
		- deadlock in signals processing
		- crashes in fuzzy_storage
		- crashes in tokenizers if the input was empty
	* Import new libucl with several bugfixes and improvements
	* Support listening on ipv6 addresses only
	* Fix macro expansion in SPF module
	* Several bugfixes in DKIM module
	* Add load headers support for mime parts to the lua API
	* Add documentation for:
		- workers in general
		- fuzzy_storage worker
		- fuzzy_check plugin
		- mimepart and textpart lua API modules

0.7.6:
	* Apply boundary fix for dkim simple canonization
	* Fix ping command
	* Return nil if header was not found in lua_task
	* Fix hang in upstreams revive logic
	* Decode entitles when normalizing HTML parts
	* Fix logic of finding URLs in HTML parts
	* Do not include \0 into length of text when performing conversion to utf8
	* Fix raw vs parsed reperesentations
		Raw parts are now:
			- decoded b64/qp, but *NOT* converted to utf-8
		Processed parts are now:
			- converted to UTF-8
			- normalized if needed (e.g. HTML tags are stripped)
	* Rework DKIM canonization to line based
	* Fix fuzzy hashes addding
	* Use more specific hash function for fuzzy
	* Fix leaking of iconv descriptors
	* Fix PTR resolving in lua resolver
	* Rework spf module.
		- Copy data to memory pool as cached record might be destroyed causing
		  freed memory being passed to the protocol output (use after free)
		- Allow SPF_NEUTRAL policy to be handled separately
		- Add R_SPF_NEUTRAL to the default config
	* Rework `register_symbols` function
	* Allow to disable components of hfilter

0.7.5:
	* Fix owner when creating folder /run/rspamd (by @sfirmery)
	* Fix IP validity checks
	* Decode URLs obtained from HTML tags
	* Fix crash with unweighted upstreams
	* Stop processing headers in parts
	* Set sockaddr.sa_family properly when connectig to upstreams
	* Fix reload issues in surbl and fuzzy_check (reported by @citrin)
	* Fix timeouts in redirector
	* Improve lua errors reporting
	* Fix lua closures processing in libucl
	* Rework calling of lua functions from regexp module
	* Choose raw regexp for raw headers
	* Rework conversion to utf since glib one is broken
	* Ignore SGML style tags in html
	* Fix old bug with non-capturing https urls
	* Fix memory corruption on fuzzy reload (reported by @citrin)
	* Fix percents display in rspamc
	* Fix buffer update for DKIM
	* Do not validate utf for raw headers

0.7.4:
	* Fix build under *BSD
	* Detect HAN unicode script
	* Implement language detection heuristic for text parts
	* Fix time output in history
	* Improve piechart coloring
	* Fix \r\n conversion in DKIM module (reported by @citrin)
	* Try to detect systems with no IPv6 support
	* Fix multiple/single values in use settings (reported by @citrin)
	*  Rework IP addresses in upstreams:
		- Select ipv4/unix addresses if they exist and use ipv6 for ipv6 only
		  upstreams (since the support of ipv6 is poor in many OSes and
		  environments)
		- Free IP list on upstream destruction
		- Add test cases for addresses selection
		- Allow adding of free form IP addresses to upstreams
    * Fix endiannes in lua_radix search (reported by @citrin)
    * Soft shutdown should also set wanna_die flag (reported by @citrin)
    * Stop use-after-free in event loop termination
    * Fix processing of very short messages in DKIM (reported by @citrin)
    * Detect systems without shared mutexes
    * Fix issues with PTR and MX elements in SPF parser (reported by @citrin)

0.7.3:
	* New upstreams code:
		- simplify upstreams API;
		- unify strings parsing in upstreams definition;
		- add configuration options for the upstreams;
		- for failed upstreams re-resolve their addresses;
		- use all resolved addresses for an upstream (round-robin);
		- implement stable hashing and use it by default for upstreams;
		- add unit test for upstreams module.
	* Rework signals processing in all rspamd workers:
		- signals are now processed in the event loop;
		- implement the most common signal handlers for all workers;
		- add callbacks for workers specific signal handlers
	*  Fix critical issue with fuzzy storage:
		Fuzzy stroage could not save any hashes on termination due to bugged
		signals handling
    * Fix roll history IP storage
    * Rework ipv4/ipv6 handling in parsing addresses:
		- turn off support of IPV6_V6ONLY socket option;
		- create ipv6 socket prior to ipv4 one to handle systems with v6/v4
		sockets enabled (Linux)
    * Remove CBL as it's wholly included in Spamhaus XBL (by @fatalbanana)
    * Remove nszones.com fake RBL (by @citrin)
    * Fix upstreams interaction for fuzzy_check
    * Verify spf PTR records (reported by @citrin)
    * Fix spf MX records parsing
    * Add compatibility for old libevent (by @yellowman)
    * Sync bugfixes from libucl

0.7.2:
	* Convert all maps to the compressed radix trie
	* Allow IPv6 addresses in IP maps
	* Remove dynamic items support from symbols cache
	* Allow hex encoded output of strings
	* Fix bug with control connections count
	* Process fuzzy weight correctly (reported by @fatalbanana)
	* Remove extra reference retain of http connection on error
	* Remove deprecated options from the default config
	* Add `one_shot` attr to metric's symbols
	* Doc: add documentation for metrics
	* Add Upstart job to debian packaging (by @CameronNemo)
	* Config: improve SURBL symbols descriptions (by @citrin)
	* Config: reflect SURBL changes (by @citrin):
    	- Outblaze removed, malware moved to separate list:
    	http://www.surbl.org/news/internal/MW-malware-sublist-added-to-multi
    * Fix C modules initialization on restart
    * Treat single IP as a single IP in radix lists (reported by @citrin)
    * Do not touch file and core limits if not asked explicitly (reported by @citrin)
    * Improve logging for fuzzy errors
    * Block SIGPIPE for HTTP writing
    * Doc: update manual pages
    * Fix HTTP connection termination
    * Reduce default number of parallel requests to 8
    * Sync with libucl include features

0.7.1:
	* Fix typo in stat output.
	* Fix issues with includes crossing with the system includes
	* Restore testing framework
	* Add radix trie test suite
	* Implement new path-compressed radix trie.
	    - The performance benefit over the old algorithm is about 1.5 times.
		- Memory usage is significantly lower as well.
	    - Now radix trie can accept any IPv4/IPv6 values
	* Various improvements to the memory pools code
	* Fix writing reply to a client when no filters are defined
	* Write base32 encoded fuzzy
	* Fix 'soft reject' action
	* Fix rspamd reload and modules reconfiguration
	* Fix subject rewriting for the default subject
	* Fix states for processing task and pre-filters
	* Fix issues with connection closing
	* Fix crashes in rdns
	* Fix ratelimit pre-filter
	* Update exim patch.
		- Update to the recent exim version
		- Strip extra leading src/ from the patch
		- Remove sendfile since it was broken
		- Fix rspamd spam report for exim
	* Improve documentation

0.7.0:
	* Use HTTP protocol for all operatiosn
	* Webui worker is now removed and controller works as webui
	* Allow to serve static files via controller by option `static_dir`
	* Rspamd interface is now a part of rspamd
	* Rspamc client has been rewritten to use HTTP and non-blocking mode
	allowing to start multiple operations simultaneously (see `-n` option)
	* Lua API was completely reworked to satisfy modern standards of LUA:
		* Module `lua-message` was removed
		* Reduced number of superglobals registered by rspamd
		* Many functions has been redesigned
		* Symbols registration is now more convenient
	* Users settings has been rewritten as lua plugin
	* Reworked headers system as gmime's based one misses many headers and is
	very slow to get headers values
	* Reorganized code and removed embedded jannsson by using UCL for all json
	parsing
	* Migrated to `librdns` for DNS resolving that improves concurrency for
	DNS requests significantly
	* Fixed tonns of bugs in MIME processing
	* Improved metrcis and default symbol's weights
	* Added new RBL's
	* Fixed a number of issues in the modules
	* Removed several memory leaks found
	* Fix unicode processing
	* Fix fuzzy checking for unicode parts
	* Significantly improve documentation and especially LUA API docs
	* See migration notes at https://rspamd.com/doc/migration.html

0.6.8:
	* Controller now listen for localhost and not for 127.0.0.1 by default
	* Allow FCrDNS-style RBL lookups (by @fatalbanana)
	* Reduce threshold for parts_differ function.
	* Fix hostname lookup for rdns rbl (by @AlexeySa)
	* Fix HFILTER_URL_ONELINE to reduce false positive rate.
	* Fix whitelist module.
	* Allow override system predefined settings without touching system ones
	by .try_include macro (by @andrejzverev)
	* Check for [ip.address]-style HELO and suppress lookups. (by
	@fatalbanana)
	* Optimize hfilter (by @AlexeySa)
	* Fix issue with random numbers generator in dns.
	* Use more clever time values to setup entropy.
	* Synced with the recent libucl.

0.6.7:
	* Use ChaCha20 for DNS generator (more secure DNS id)
	* Unknown symbols now has zero weight and not 1.0
	* Fix fuzzy hashes expire time
	* Fix critical issue in statfiles on FreeBSD 9 (and some other platforms)
	* Add .include_map macro to ucl parser
	* Update libucl
	* Fix headers end detection for DKIM module
	* Fix a bug in received headers parser
	* Validate IP addresses before pushing them to lua
	* Start new documentation project
	* Fixed tonns of other minor bugs
	* Start to prepare for 0.7 with HTTP protocol and new settings

0.6.6:
	* Removed issue with BUFSIZ limitation in the controller output
	* Simplify logging symbols escaping
	* Adjusted weights for several rules
	* Improve spamhaus rbl support
	* Removed PBL for received headers checks
	* Added hfilter module that performs various HELO and IP checks.
	* Rspamd can now be reloaded by HUP signal
	* Fuzzy storage should expire hashes properly
	* Build system has been reworked for better supportof pkg-config
	* Various minor bugfixes

0.6.5:
	* Fixed critical bug in DNS resolver, introduced in 0.6.4
	* Improved multimap and rbl plugins to skip
	* Add dns_sockets option for tuning sockets per server in DNS resolver
	* Improved packages for rspamd

0.6.4:
	* Added io channels for DNS request to balance load and reduce id
	collisions chance
	* Fixed a bug in SPF filter that may cause core dump in specific
	circumstances
	* FIxed default config for rbl module
	* It is possible to get a list of rspamc commands with their descriptions
	* Added SORBS bl to the default config
	* 2tld file for surbl module has been significantly extended
	* Perl modules has been removed from the code.
	* Fixed an issue in libucl when parsing macros

0.6.3:
	* Fixed issues with DNS:
	 - labels decompression algorithm was fixed;
	 - added resolve_mx to lua API;
	 - fixed modules that use DNS.
	* Lua modules once_received and emails reworked for new resolver API and UCL.
	* Debian package was polished.
	* Fixed a bug in fuzzy_check module that prevents correct processing messages
	  without valid parts.

0.6.2:
	* Fuzzy check module has been reworked:
	 - now fuzzy_check operates with a group of rules, that define which
	 servers sre to be checked;
	 - it is possible to specify read_only groups to avoid learning errors;
	 - turn fuzzy_check to one_shot mode permanently;
	 - fuzzy_check module configuration is now incompatible with the previous
	 versions.
	* Imported bugfixes from libucl.
	* Fixed whitelist plugin.
	* Fixed statfiles resizing.
	* Improved logging initialization order.
	* Fixed race condition in the controller worker.

0.6.1:
	* Critical bugfixes:
	 - fixed build system;
	 - fixed in_class setting in bayes learning;

0.6.0:
	* Use UCL instead xml for configuration (https://github.com/vstakhov/libucl)
	* Fix statistics module normalization
	* Rework the many modules for the new configuration:
	 - surbl has incompatible configuration;
	 - fuzzy_check has incompatible configuration;
	 - multimap has now new configuration;
	 - received_rbl is removed and replaced by rbl module.
	* Removed deprecated options:
	 - statfile_pool_size;
	 - action and required/reject score for a metric.
	* Simplify build system and unify configuration for all platforms.
	* Improved URL detector (reduced false positive rate).
	* Lua 5.2 is now the default and fully supported version.
	* Tons of bugfixes and minor improvements.

0.5.6:
	* Fix bug with counters incrementing in rolling history
	* Detect expl and exp2l as some systems do not have it
	* Support input streams without Content-Length
	* Implement counters output via rspamc and controller interface
	* Fix bug with udp sockets in fuzzy storage

0.5.5:
	* New bayes normalizator based on inverse chi-square function
	* Various fixes to fuzzy storage
	* Allow update fuzzy storage only from specific IP addresses
	* Better support of IPv6 and address selection algorithms
	* Add CentOS spec file

0.5.4:
	* Fixed issues with diff algorithm
	* Added support of RRD statistics
	* Add webui worker for interface interaction
	* Fix a lot of issues with dynamic conf
	* Fix critical memory leak in settings code
	* Improve stability of the system

0.5.3:
	* Added dynamic options
	* Added advanced metaclassfication
	* Added RESTfull API for controller
	* Improved hashing algorithms
	* Various fixes for rspamc client:
	 - allow interacting with unix sockets
	 - librspamdclient major cleanup
	 - bayes is now default classifier
0.5.2:
	* Added lua bindings for:
	 - basic mime parts, that allows checkign attachements for example;
	 - DNS resolver;
	* Existing lua bindings now works without task object allowing to use them
	in custom code.
	* Threads system was reworked to avoid global lua interpreter lock.
	* DKIM module now converts all line endings to CRLF how opendkim does.
	* URL detector is now more accurate for text parts.
	* Several critical bugs and memory leaks were fixed.

0.5.1:
	* Added lua worker type to handle network connections in lua.
	* Added lua bindings for async_session, IO dispatcher, memory_pool, and
	worker.
	* Composites can now uses other composites in expressions.
	* Fixes for debian package and for FreeBSD >= 9.1
	* Add support of gmime-2.6 if gmime-2.4 is not found.
	* Improve url detection and phishing detection.
	* Add lua mime_part library to get an access to all message part
	attributes (like filename, length, type).

0.5.0:
	* Added SMTP lightweight balancing proxy with XCLIENT support.
	* Added lua bindings for upstreams objects and API.
	* New pre-filters are implemented to support initial checking for messages.
	* Added ratelimit plugin that uses redis protocol to store data.
	* Added ipv6 support to spf and some other modules.
	* Unbreak spf plugin.
	* Allow options with the same name be threated as list.
	* DKIM plugin an parsing code was added.
	* Separate build system to put logic in several shared libraries.
	* Many bugfixes.

0.3.2:
	* Add error handling for regexps
	* Fix quit command in controller interface
	* Write symbols weights to rspamc output
	* Improve logic of selecting rspamc version
	* Do not try to parse broken DNS replies
	* Add 'raw' flag to FROM_EXCESS_BASE64 rule (requested by citrin)
	* Output message id in rspamc reply
	* Fix inserting composite symbol
	* Fix output of log line
	* Document composites
	* Add logging for fuzzy checks
	* Add logging for learning
	* Improve logic of learning messages - do not learn more than specific threshold
	* Fix inserting results for symbols that were incorrectly (for example more than 1 time) defined in config file
	* Do not output control characters if output is not terminal
	* Fix some logic errors in learning
	* Consider lua plugins errors as fatal configuration errors
	* Fix wirting message id during fuzzy_add command
	* Display weight of symbols correctly
	* Fixes to winnow learning
	* One more try to improve accuracy of winnow algorithm
	* Add bayesian classifier (initial version)
	* Remove normalizer as it is winnow specific thing, so all statistic algorithms now returns value from 0 to 1
	* Some fixes to fuzzy hashes expiration:
	* Fix assertion while look up value in NULL hash (found by cirtin)
	* Fix normalization for systems that have not tanhl function
	* Ignore rfc822 group addresses
	* Move images library to core rspamd
	* Add lua api to access images properties
	* Add post filters to lua API - filters that would be called after all message's processing
	* Add ability to check for specified symbol in task results from lua
	* Add ability to check for metric's results from lua
	* Add ability to learn specified statfile form lua
	* Add ability to extract filename and size of images from lua
	* Fix assertion while extracting internet address
	* Fix races in fuzzy storage
	* Make spf parser case insensitive
	* Add ability to check hashes of selected mime types
	* Add ability to set minimum size in bytes for mime types
	* Add ability to set minimum dimensions for images
	* Assume all text/* content types as text/plain
	* Fix getting data wrapper for gmime24
	* Many fixes to statfile syncronization system
	* Fixed statfile pool initialization and synchronization with disk
	* Prepare 0.3.2
	* Fix Mail::Rspamd::Config for new rspamd features
	* Use Mail::Rspamd::Config in rspamc client
	* Write user's name to rspamd log
	* Prepare rspamd build infrastructure for creating rpm and deb packages
	* Fix depends
	* Add start script for linux systems
	* Fix shared usage of statfiles
	* Add invalidation of statfiles in case of learning, so now statfiles
	* This should fix shared usage of statfile pool by several processes
	* Fix misprint (reported by az)
	* Fix stupid error when all checks can be done in a single pass
	* New trie based url scanner (based on libcamel)
	* Small fixes to rspamd perl client
	* Write fuzzy hashes info to log
	* Add trie interface to lua api
	* Explain sample config and cleanup it

0.3.1:
	* Add modules documentation
	* Continue implementing smtp proxy
	* Implement new learning system, now rspamd should be much more intelligent while learning messages
	* Convert statistic sums to use long double for counters
	* Use hyperbolic tangent for internal normalizer
	* In classify normalize result after comparing, not before
	* New symbols sorter
	* Fix strict aliasing while compiling with optimization
	* Fix tanhl detection for platforms that have not implementation of it
	* Remove several compile warnings
	* Add experimental support of dynamic rules to regexp module
	* Document views configuration
	* Several fixes to documentation
	* Add more logic for dynamic rules
	* Add documentation for dynamic rules
	* Add ability to make negations in networks in dynamic rules
	* Clean up cache items correctly
	* Implement basic SMTP dialog:
	* Implement interaction with smtp upstream (with support of XCLIENT)
	* Check messages received via smtp proxy
	* Add support for sendfile in io dispatcher
	* Fix issues with compatibility of worker_task and smtp proxy
	* Proxy DATA command
	* Fix SMTP
	* Change metric logic
	* Completely remove lex/yacc readers for config
	* Make common sense of metric/action and symbols
	* Sync changes with all plugins
	* Incorrectly removed in previous commit
	* Fix misprint (by Andrej Zverev)
	* announce the "password" keyword in usage list
	* Implement initial version of greylisting triplets storage
	* Fix issues with smtp worker
	* Fix QUIT command in SMTP worker
	* Some fixes about new metrics system (may be incomplete)
	* Get weights of symbol from default metric for symbols cache
	* Fix setting task->from/task->rctp in smtp client
	* Copy from and rcpt correctly
	* Some performance improvements to IO dispatcher (do not drain the whole buffer after a single line readed)
	* Fix smtp data input
	* Fix misprint
	* Add limit of maximum allowed smtp session errors
	* New logic of SURBL module:
	* Use system mkstemp(3) on systems where it is available as glib implementation
	* Try to fix memmove issues in io dispatcher
	* Remove debug from SURBL module
	* Rewrite buffered input for line policy (again)
	* Fix issue with links that are ip addresses in numeric form in surbl
	* On Darwin use BSD style sendfile definition
	* Reorganize platform specific knobs in CMakeLists
	* Use gettimeofday on systems that have not clock_getres
	* Use ftime for dns trans id generation on systems without clock_getres
	* Darwin sendfile(2) support
	* TIMEDB->TIMEB
	* More to previous commit
	* Pass env from main() arguments instead of platform specific global environ
	* Fix compatibility issues
	* Fix -lintl detection
	* Init some variables to avoid problems
	* Remove garbadge (gnome terminal sucks)
	* Add more information about why we drop smtp connection
	* Fix mkstemp call
	* Send to upstream QUIT command at the end of session
	* Check return value of each rspamd_dispatcher_write as in case of write errors sessions can be destroyed early
	* Fix states in smtp dialog
	* Use rspamd_snprintf instead of libc one
	* Fix URLS command
	* Fix reconfigure process of surbl module
	* Fix destroying smtp session (unmap memory and do not delete pool early)
	* Delete pool after using its variables
	* Delay timer must be registered in async session to correctly handle connection termination
	* Register dns requests in session too
	* Make session before registering events
	* Remove events in handlers
	* Add ability to set filters for smtp worker for each smtp stage
	* Add very initial version of DNS resolver (many things to be done)
	* Announce weights and sync
	* Fix few typo
	* Understand short names of facility in logging config
	* Add ability to make whitelist for spf checks
	* Misprint != -> ==
	* Handle lua tag in way that it is not required to write additional text:
	* Strip all starting whitespace symbols from xml texts
	* Fix stupid bug in calculating buffer length while reading file maps
	* Add resolv.conf parsing into dns.c
	* Fix microseconds<->milliseconds conversions
	* Take callback argument in Mail::Rspamd::Client for processing files and directories
	* Print results if rspamc is called for a directory
	* Fix stupid error with surbl module reconfig (another one, blame me)
	* Do not show duplicate urls in url header
	* Fix detection of numeric urls (reported by citrin)
	* Write real time of message's scan to log (not only virtual)
	* Fix chartable module in utf mode
	* Fix parsing of some broken urls
	* Add ability to test regexp with 'T' flag
	* Write more code for DNS resolver:
	* Make DNS resolver working
	* Many improvements to rspamd test suite: now it CAN be used for testing rspamd functionality
	* Write DNS resolver tests
	* Fix issues with memory_pool mutexes and with creating of statfiles
	* Forgotten in previous commit
	* Add support for parsing SPF and SRV records
	* Fix PTR parsing
	* Add tests
	* Make SURBL module to use rspamd dns module
	* Several fixes to DNS logic
	* Remove evdns and use only rspamd resolver
	* Very hard to detect problem with race among error in socket and destroying task while we are writing to socket and go through a hash table
	* Fix resolving in smtp module
	* Init events before configuring resolver in smtp worker
	* Set resolver inside task
	* Fix reload signal (reported by citrin)
	* Some improvements to redirector
	* Call has_forked method to inform POE about fork
	* Fix lua DNS code
	* Decompress labels in DNS packets more strictly
	* Fix some problems with TXT records
	* Try to fix removing of DNS events
	* Do not insert unparsed RR's into reply
	* Calling callbacks may cause destroying session from which we are calling callback so we MUST call callback as the latest action
	* Fix check_smtp_data function
	* Add ability to make views by recipient
	* Add ability to set metric's action from config file
	* Fix bug with writing garbadge if message has no urls or no messages
	* Fix bug with incorrect behaviour of compare_parts_distance function
	* Add ability to assign several actions to one metric
	* Report action in rspamc protocol
	* Mail::Rspamd::Client and rspamc can now understand Action header too
	* Write action to log as well
	* Make valgrind happy about comparing symbols
	* Add more debug to comparing parts distance function
	* Write action even if message has no symbols
	* Make improvements to HTML entites decoder: now it replaces entities with common characters and
	* Add -d option to force debug output
	* Assume 7bit as default transfer encoding
	* Do not overwrite lua plugins and configs if they already exists in target directory
	* Improve logging
	* Write queue id to log
	* Remove test messages from cmake
	* Reopen log file by USR1 signal
	* Add reopenlog method to FreeBSD rc script
	* Adopt foreach for cmake 2.6
	* Fix to rc script
	* Do not try to resolve names with several dots in a row
	* Fix surbl request formatting for ip addresses
	* Handle cases of broken requests
	* Fix problems with parsing compressed names
	* Fix TXT records parsing
	* Fix expanding spf macros that may fail in rare cases
	* Fix another error with early task destroying
	* Handle empty from header
	* Improve reopenlog command in rc script
	* Strip trailing whitespace characters in Mail::Rspamd::Client
	* Use ungreedy match to strip trailing whitespaces
	* Stupid error in calculation compressed label length
	* Some optimizations to client library
	* Do not compare empty parts
	* Empty and non-empty parts are allways different
	* Save in regexp cache the whole regexp with header name (if exists) and with flags
	* Add rspamd_log variable to lua plugins to access logging functions
	* Each part in rspamd task now can have parent part
	* Check for parts distance only for multipart/alternative subparts
	* Do not check attachements even if they are text (but attached as file)
	* Do not die if write (2) returned ENOSPACE while doing logging, turn on throttling mode instead (1 write try in a second)
	* Add ability to turn on debug for specific symbols
	* Add ability to configure dns timeouts and dns retransmits in config file
	* More debug
	* Fix extracting arguments in lua logger interface
	* Turn off debug_ip during reload if it was disabled by new config
	* Improve lua logging
	* Pre-init symbols cache when rereading config
	* Fix lua representing of invalid ip (nil, not 255.255.255.255)
	* Fix R_TO_SEEMS_AUTO rule (by citrin)
	* Add multimap lua plugin
	* Fix some multimap issues
	* Try to save images hashes to fuzzy storage to stop some annoying spammers
	* Allocate some more bytes for read buffer to avoid incorrect behavoiur
	* Add ability to check dns black lists by multimap module
	* Add multimap documentation
	* Fix labels parsing
	* Another try to save regexps in cache correctly
	* Improve test logs for regexps
	* Fix parsing txt records to avoid reading of uninitialized data
	* Fix error with writing symbols cache file
	* Fix error while working in utf mode when raw regexps was not created properly
	* Do not add extra byte while converting text to utf
	* Add error handling for regexps