If you have used the JavaScript Patterns provided with this ressource inside your code, you must update one line to prevent errors with other addons: Search:
Explanation:
The Recursive mode of the jQuery extend function must be activated
If you want add buttons and probably addons too @Sonnb provides a better way to do this. This method will be probably used by XenForo later. You need to create a listener of the EditorSetup and specify some json elements for the editor options.
Version 1.1 releasedAdd a new method to override buttons layout configuration thanks to @Despair.
There would be a third method by groups, but I'm not fan. It is less flexible.