Rated 5 out of 5 stars

i'm using v1.12 pre15. the "vertical tabs" feature works very well.
i just have one wish: make tabs move up and down by drag and drop instead of stacking them!

edit: now pre16. it seems to behave differently than before. its weird. i can only move a tab to the very top or to the bottom of all tabs.

This review is for a previous version of the add-on (1.1.1-signed). 

Move your mouse near to the left or right end of the tab.