ElasticSearch Essentials 3.15.12

• Fix auto-complete would not discover from dbtech eCommerce products in nested categories

• Change autocomplete to exclude XFRM Resource discussion threads, and only return the resource itself
  When triggering autocomplete for just threads the discussion thread can be returned.

• Prevent "did you mean?" suggestions and autocomplete from sending search terms >200 characters into the search backend as this could trigger server errors

• Fix moderator "Include deleted" search preference not being injected when "Search Options" preference section added by Search Improvements

• Update "Search first posts only" phrase & style property to "Search titles and first posts only" to match Search Improvements
• Change 'search only x' phrase to 'search x only' to match XF
• Fix searchcontent bb-code from Advanced Bb-codes pack attempting to set the search order did not work

• Fix "Invalid argument supplied for foreach()" when using the XFES widget and the option "Replace Enhanced Search 2.2's suggest threads implementation" when similar threads finds no results

• Workaround XF bug where searching by a list of prefixes could cause the search to unexpectedly fail.
• Fix XFES similar thread widget when "Replace Enhanced Search 2.2's suggest threads implementation" option was enabled would not show results on the first view

• Fix similar thread's suggest limit would be ignored (and default to "all" visible forums) if a subforum was marked to be excluded from similar threads

• Fix various numerical options which did not step in the incremental values as intended, while allowing arbitrary values in the range to be entered
• Fix redundant queries being triggered when using XFES widget when "Replace Enhanced Search 2.2's suggest threads implementation" is set
• Fix setting similar thread cache time to 0 didn't disable caching
• Improve backend for similar thread widget to be more extendable, to be used in searchcontent bb-code in Advanced Bbcode pack add-on

• Recommend Search Improvements v2.10.0+
• Remove redundant template modification as Search Improvements is required
• Simplify how Report Improvements report/warning search results are filtered, as that add-on now does much of that