TOP PRIORITY:

Add a shortcut to open tree tabs sidebar

undo close to restore trees (will work ONLY in firefox)



Loading data using message

Close tab on Middle mouse click and not On Middle mouse down

Split Pin size in theme


add textbox for ungrouped name in options





LOW PRIORITY:

option for scrollbar on the left
folders

unread state?

menu: collapse entire tree
menu: expand tree
menu: copy urls of the selected tabs
menu: bookmark selected tabs/tree
menu: select all
menu: invert selection
menu: close above/close below

options: Customising the context menu


click on active to return to previous tab

sort tabs/tree

maybe filter tabs on search


make tabs border width configurable, including size 0

make tab spacing confiogurable, including 0 size