Compatibility fix for Alert Improvements v2.8.11+
Fix "Thread Starter alerts skips mark read" user preference being incorrectly set to an empty value if Alert Improvements wasn't installed
Fix incorrect view permission check when generating a 'thread starter alert'
Fix case where a post reply alert is incorrectly marked as a thread starter
Fix not doing full visibility checks when displaying a threadmark in alerts
Improve threadmark integration, by showing threadmark label & category in a thread starter alert
Change phrasing text for "Thread Starter alerts skips mark read" user preference,
Move "Thread Starter alerts skips mark read" to be with the other Alert Improvements "X skips mark read" options.
Revert setting the default value for "Thread Starter alerts skips mark read" to enable, this does not update existing users.
Requires php 7.0+
Require XenForo 2.1+
Now depends on Standard Library by Xon
Confirm XF2.2 support
Add per-user "Do not automatically read thread starter alerts". Requires XF2.2+ or Alert Improvements v2.8.0+
Add front-end option for users to set watched content notifications to "OP emails" by default instead of no emails, or all emails
Generate 'staff alerts' (when Threadmarks & Advanced bb-codes pack is installed) as a separate alert action, and do not allow staff alerts to be ignored.
Allow thread starter emails to trigger all the time a thread starter posts (like alerts) instead of just when "OP only emails" is configured
Fix that the per-user option "Thread Starter replies always alerts" was not always being respected