xF2 Add-on Conversation Improvements by Xon 2.4.6

• Add "silently edit" feature for editing conversation messages, requires the "edit any message" permission

• Fix edited conversation messages lacked the "Last edited:" marker after they had been edited

• Require Search Improvements v2.10.0+
• Improve how conversations are filtered out of search results when using XFES without ElasticSearch Essentials

• Fix mysql-based search support not returning conversation search results when using the conversation search tab

• When using XenForo Enhanced Search:
  • Improve reliability of indexing recipients into conversations for search
  • Improve generating constraint restricting conversations to recipients
  • If using Search Improvements v2.9.6 or earlier, ensure the option "Push "View X by others" check into XFES" is enabled.
    If it was disabled, you will need to re-index for conversation search to return results

• Fix SQL error when the last member of a conversation leaves

• Code style cleanup
• Use strict equality checks
• Force global namespace for functions which are known to be optimizable to bytecode in php

• Remove unneeded SV/Utils bundle from redistributable, removing from hashes.json

• Requires php 7.0+
• Now depends on Standard Library by Xon
• Supports XF2.2

• Fix that deleting a conversation did not remove history items
• On install, Cleanup xf_edit_history table of orphaned conversation entries