Unmaintained Collaborative Threads 1.0.1

• Allow the thread starter in a collaborative thread to participate in collaborative post editing that other collaborators have started

This add-on has had the beta tag removed, and is considered stable for production use.

Fixes since the last beta;

• Fix error when replying with a user mention when collaboration is potentially enabled for a forum
• Fix permissions when adding a user who has participate but not join permission.
• Added compatibility shim for add-ons which integrated with adding collaborative for old pre-release versions of this add-on

• Fix "Call to a member function query() on null" for add-ons which integrate with Collaborative Threads