Release 1.9.1

Release 1.9.1

* [Conf] Add vendor groups for symbols
* [Feature] Add `rspamadm template` command
* [Feature] Allow to add messages from settings
* [Feature] Allow unconnected DNS servers operations
* [Feature] Check limits after being set, migrate to uint64
* [Feature] Greylist: Allow to disable greylisting depending on symbols
* [Feature] Improve lua binary strings output
* [Feature] Mime_types: Implement user configurable extension filters
* [Feature] Mime_types: When no extension defined, detect it by content
* [Feature] Preprocess config files using jinja templates
* [Feature] Replies: Filter replies sender to limit whitelisting to direct messages
* [Feature] Treat all tags with HREF as a potential hyperlinks
* [Feature] Validate BTC addresses in LEAKED_PASSWORD_SCAM
* [Fix] Add crash safety for HTTP async routines
* [Fix] Another fix for Redis sentinel
* [Fix] Clickhouse: Fix table schema upload
* [Fix] Core: Fix squeezed dependencies handling for virtual symbols
* [Fix] Finally fix default parameters parsing in actions section
* [Fix] Fix ES sending logic (restore from coroutines mess)
* [Fix] Fix finishing script for clickhouse collection
* [Fix] Fix priority for regexp symbols registriation
* [Fix] Fix various issues found by PVS Studio
* [Fix] Initialize lua debugging earlier
* [Fix] Neural: Fix training
* [Fix] Rework cached Redis logic to avoid sentinels breaking
* [Fix] SURBL: Fix regression in surbl module
* [Fix] Fix double signing in the milter
* [Project] Add support of HTTP proxy in requests
* [Rework] Change lua global variables registration
* [Rework] Rework HTML content urls extraction
* [Rework] Start rework of aliasing in Rspamd
* [WebUI] Combine Scan and Learning into one tab
* [WebUI] Fix symbol score input type
* [WebUI] Show grayed out pie
* [WebUI] Update Throughput summary values dynamically

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