Plan for Book 3.0 release

Problem/Motivation

The 3.0 release of the Book module → will have some big changes, including:

• The removal of the book content type. See book/issues/2871733 🌱 Remove the book content type from the book module Active
• Allowing per book child content type configuration. See book/issues/3173808 ✨ Make book child content-type configurable per enabled book content-type Postponed

These changes may or may not have an impact on the functionality of the book_tree_menu module.

Remaining tasks

Determine if the Book 3.0 changes will impact this module.