Require php 7.2+
Fix that elasticsearch could be queried for impossible queries when searching taggable/groupable's which aren't possible
Fix XFES similar thread would cause an extra query when "Replace Enhanced Search 2.2's suggest threads implementation" was disabled.
Add autocomplete support for NixFifty's Tickets add-on (v2.4.0+)
Add 'most recent' search sort type support for Tickets
Support content tooltips from autocomplete
Include 'Browser Detection' add-on in download list.
Actually distribute readme file for the xf-rebuild:search-bulk command
Rename the nonsenically named search option from "Search only containers" to "Search first posts only".
Compatibility tweak for upcoming add-on related to tagging
When searching and requiring a tag which doesn't exist, return a search error
php 8.2 compat fixes
Fixes for CLI command xf-rebuild-bulk-search
Fix "--newest-first" flag would cause content to be indexed from the content types with the most data first
Fix "--delete" flag would not actually delete the index
Fix case where "Weight by X" was not being applied to search queries
Add "Apply content weights to auto-complete" option (default disabled, as it increases the query complexity)
Require XenForo 2.2+
Fix "[ESE] Autocomplete" permission was not being checked for root-level autocomplete attempts
User's must have '[ESE] Autocomplete' permission in a global context, while '[ESE] Autocomplete' can be revoked per-forum.
Allow autocomplete links to be clickable
Add "last updated limit" to autocomplete & similar thread widget to support limiting by last update for threads/resources/Bob's AMS Articles
Requires re-indexing of resources & AMS Articles to enable this!
Add "Redirect to top validated suggestion" option.
If search result suggestion validation is enabled, a search with no results will redirect to the suggested search term with the most results.
Fix "Cannot access offset of type string on string" on some member thread lists
Elasticsearch currently contains a vulnerability which can allow remote code execution or leaking server IP.
It is strongly recommended to upgrade to Elasticsearch 6.3+ and apply the documented migration.
For more information see; PSA: Potential security vulnerability in Elasticsearch and more via Apache Log4j (Log4Shell)
Restore ElasticSearch 5.0 support when using "Exact title" and "Exact body" features
ES 5.0 does not support the "quote for exact match" feature
ElasticSearch 2.x probably works but isn't actively supported