New features
- Drag and drop tabs inside a container to reorder them.
- Tab drag and drop between containers.
- New option to disable sorting of tabs.
- Group of containers (supergroups).
- Tags to organize tabs inside a single container.
Improvements and fixes
- Adopted state of art tab sorting algorithm.
- New paths for add-on pages.
- Moved common codes into external libraries.
- Preparation work for a more responsible and performant non-persistent background page.
- Removed legacy codes.
- New language: Chinese (Simplified).
- Translation updates.
- Dependencies updates.
- Bug fixes.
Download and install from: https://addons.mozilla.org/firefox/addon/container-tab-groups/