Threadmarks Pro 2.21.1

• Fix error on merging threads
• Tweak New Threadmarks widget to reduce queries for node-level permissions
• Push forum-level "view" permission into query to reduce over-fetching required (unviewable content was still filtered out)

• Tighten up checking of threadmark view permissions when viewing lists and editing posts with a non-viewable threadmark
• Fix [E_WARNING] Invalid argument supplied for foreach()
• Fix merging posts when a source post has a threadmark but the destination does not

• Improve XF1 upgrade installer code path, tweak two expensive data migration queries to 1 somewhat expensive query.
• When viewing a threadmark list, embedded view is collapsed/hidden, but for the full list it is visible. This is state is stored in local storage.

• Fix installer when upgrading from XF1 Threadmarks

• Fix searching just posts not returning any results.
  • Does not require rebuilding the search index
• Rework installer to be more robust.
  • Ensure the src/addons/SV/Utils folder is also uploaded! If it exists, just overwrite.

• Add sort option to threadmark widget (threadmark date vs content date)
• Per-author stats now consistently reports the content author, not the threadmark creator
• Per-author stats now is cachable
• Rework selection logic for non-continuous ranges;
  • Guests prefer the start of the threadmark list
  • Members (with no unread items) prefer the end of the threadmark list
  • Members (with some unread items) cluster around unread items and then prefer the end of the threadmark list
• Fix moving threads
• Fix off by 1 error with the "x hidden" threadmark on-hover tool-tip when non-continuous ranges are in the threadmark list.

• Fix hard deleting threads

• Thread Starter Alerts integration
• Add threadmark sort link to the threadmark index options list
• Threadmark index/list now loads in overlay
• Fix Sort linked contents would return an empty template

• Fix post merging support

• Fix threadmark index icon update url being incorrectly generated
• Support the "All user groups" option for Threadmark category permissions