* [Feature] Add a special symbol for SPF DNS errors: R_SPF_DNSFAIL
* [Feature] Add correlations report in fuzzy stats
* [Feature] Add experimental CGP integration
* [Feature] Add method to get urls length in a text part
* [Feature] Add new methods to lua_html to access HTML tags
* [Feature] Allow all types of symbols to be added via __newindex method
* [Feature] Allow to create settings for authenticated users
* [Feature] Allow to get block content for HTML tags
* [Feature] Improve DNS failures when dealing with SPF
* [Feature] Properly implement R_WHITE_ON_WHITE rule
* [Feature] Remove old ugly rules
* [Feature] Rspamc can now add dkim signature in mime mode
* [Feature] Store content length for HTML tags
* [Feature] Support reacher set of HTML colors
* [Feature] Try to avoid FP for low contrast fonts detection
* [Fix] Add missing HTML colors
* [Fix] Add spaces to dkim signature to allow folding
* [Fix] Avoid returning NaN as score on scan
* [Fix] Decode entitles in href parts
* [Fix] Do not cache SPF records with DNS errors
* [Fix] Do not crash on cyclic depends
* [Fix] Do not insert HELO/HOSTNAME unknown when they are not passed
* [Fix] Do not set absent hostname to "unknown"
* [Fix] Do not stress redis with KEYS command (#791)
* [Fix] Fix DMARC_BAD_POLICY symbol
* [Fix] Fix HFILTER_URL module
* [Fix] Fix HFILTER_URL_ONELINE rule
* [Fix] Fix buffering in CGP integration
* [Fix] Fix colors propagation from parent nodes
* [Fix] Fix confusing OpenSSL API usage of i2d_RSAPublicKey
* [Fix] Fix dependencies id sanity check
* [Fix] Fix folding for semicolon separated tokens
* [Fix] Fix largest possible TLD behaviour
* [Fix] Fix last token folding
* [Fix] Fix length calculations in white on white rule
* [Fix] Fix multiple request headers structure
* [Fix] Fix multiple values headers freeing
* [Fix] Fix parsing of background color
* [Fix] Fix printing from field in log_urls
* [Fix] Fix processing of last element of DMARC policies
* [Fix] Further fixes for HTML colors
* [Fix] Further fixes for multiple values headers
* [Fix] Further fixes for white on white rule
* [Fix] Further fixes in HTML tags parsing
* [Fix] Ignore content type/subtype case
* [Fix] Increase score of R_WHITE_ON_WHITE
* [Fix] Parse CGP envelope data
* [Fix] Propagate colors in HTML
* [Fix] Restore multiple values headers in protocol
* [Fix] Restore multiple values in headers processing
* [Fix] Some more changes to tag's content length calculations
* [Fix] Some more fixes for low contrast fonts detector
* [Fix] SpamAssassin plugin: support check_freemail_header('EnvelopeFrom', [..])
* [Fix] Trigger HTML_SHORT_LINK_IMG on any external image
* [Fix] rspamd_stats: remove deprecated defined(@array)