Fix bad interaction with per-user news-feeds
Note; recommend considering disabling the per-user news-feed cache as it is removed in XF2 anyway, as it causes Database write churn without much savings query wise
Fix News Feed "Show older items" not working as expected
Fix off-by-1 error when pushing event_date into news feed query to ensure correct index usage.
Shim news-feed to ensure better index handling
Backport from XF2 fixes for how XF does bulk rebuilds xf_thread_user_post and xf_post.position entries
Improve the global RSS feature when selecting threads from a forum with a large number of threads.
Avoiding "early joins" can offer significant savings.
Disabled by default
When an error occurs and the unoptimized conversation list query is run, call the right function.
Fix error on search which can occur when limited to no add-on's are installed.
Fix "Datas must be string or set automatic_serialization" due to failed serialization.
When XenForo update last user activity, do not allow older activity time stamps to be recorded.
Allow optional caching of the members online session list for guests.
Default 150 seconds.
Tweak options (add min values where appropriate), change "Faster Members Online Query" default value.