activerecord-tablefree 3.1.9: ActiveRecord 6 through 8.1 support

🏷️ release activerecord-tablefree 🏷️ 3.1.9

Version 3.1.9 enables table-free models on ActiveRecord 6.0 through 8.1. Those versions previously raised Unsupported during loading, so this is a concrete compatibility expansion for applications moving beyond Rails 5.

Read the upstream release notes for the complete changes and see the project repository for usage and installation.