Release 2.5

Release 2.5

* [Conf] Mark Rspamd emailbl as ignore whitelist
* [Conf] RBL: Add missing emails = true option
* [Feature] Add support for scripts in fuzzy storage
* [Feature] Arc: Add whitelisted_signers_map option
* [Feature] Implement hosts file processing
* [Feature] Neural: Introduce classes bias that allows non-equal classes learning
* [Feature] Update libev to 4.33
* [Fix] Another brain damage html standard adoptions
* [Fix] Another fix for brain damaged obs-fws state
* [Fix] Fix flags that caused force_actions failure
* [Fix] Fix logging issue
* [Fix] Fix lua symbols scores registration when config does not define scores
* [Fix] Fix opaque maps logic
* [Fix] Fix parsing of the html tags with no spaces after attributes
* [Fix] Fix some corner cases in urls parsing, add limits
* [Fix] Fix tlds extraction if custom composition rules are used
* [Fix] Fix variables replacement in mempool
* [Fix] Improve base64 detection
* [Fix] Normalize dynamic scores in ANN correctly
* [Fix] Plug memory leak introduced by #3153
* [Fix] Stat_redis_backend: Fix memory leak and simplify learn path
* [Fix] Try hard to deal with ghost workers
* [Fix] metadata_exporter default formatter
* [Rework] Change the way to extract URLs when dealing with alternative parts
* [Rework] Fix various url extraction issues
* [Rework] Re cache: Load compiled hyperscan in the main process as well
* [Rework] Re cache: Load hyperscan early
* [Rework] Rework URL structure: adjust tld part
* [Rework] Rework URL structure: host field
* [Rework] Rework URL structure: more structure optimisations
* [Rework] Rework URL structure: user field
* [Rework] URL: Another update for urls extraction logic
* [Rework] Urls: Improve query urls handling
* [Rework] Urls: adopt html related stuff
* [Rework] Urls: more rework of the urls sets
* [Rework] Urls: process query urls in HTML urls correctly
* [Rework] Urls: rework urls hash structure
* [Rework] Urls: update lua libraries
* [Rework] Use multiple search tries for different url extraction types

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