Need Groupy with new features

Groupy has some of the great features but it's still doesn't have middle mouse button to open a folders in new Windows (New Tab), other software's already have this  but i don't know why Groupy still does't add this time saving feature, i already post this kind of post 1 and half year they said they are going to work on this but it's still not there.

Please add this feature its very helpful for all user's.