Multi Prefix 2.17.1

• Require XF2.1+, remove XF2.0 support
• Fix old feed entries not correctly generating threads with prefixes
• Support rebuilding thread<->prefix links using the "Rebuild threads" option, also rebuild thread/prefix link on various operations which rebuild thread counters
• Aggregating Forums compatibility fix for filtering by a child forum and a prefix from that child forum

• Fix DBTech Shop creating items via admincp

• Compatibility fix for Watch Thread filtering add-on

• php 7.4 compatibility update (Requires XF v2.1.3)

• Fix editing DBTech Ecommercce/ship & XFRM update/first post could result in lost prefixes when a prefix was set but not usable for the current user

• When a user edits a thread with an existing prefix the user can not add, do not remove it on saving

• Fix Conversation Essentials "Copy conversation to thread" support
• Recommends Conversation Improvements v2.0.8+ & Conversation Essentials v2.1.0+
• Add-on compatibility fixes - switch multi-prefix check from opt-out to opt-in

• Workaround for mysql de-optimizer generating vastly under performant queries when filtering by prefix in some forums

• Improve DBTech eCommerce support
  • Make prefixes clickable from product page
  • Clickable prefixes on product list page require DBTech eCommerce v1.4.0+

• Improve upgrading from older XF1 versions