Great Addon for new tab group~
1. the icon on toolbar seems bigger than the others . holp to make it smaller & feel uniform.
2. import backup json seems not work all good. i'd failed to backup my tabs.
It's seems only half done & i didnt getting any notice.
3(but not in hurry). it may better has a list when clicking the icon for find my target tab without opening the manager.

-- I prefer Panorama View Cus its simple & it can keep my tabs loading status when i changing the group ( I'd try some like old tabgroup addons. but it must be reload the tabs when change group, even i loaded before..)

-- last . Thx ur addon & wish it better.