This MR is a feature implementation of #41 .
TODO
-
Add entry & other UI elements to toggle & define tree-view behavior -
Modify the model to support tree-view in details view -
Tree navigation with arrows; similar to tree-view-sidepane -
Image previews disappear on selection -
Handling Tree Model in search and location bar -
Pressing F5 removes selection in subfolders. -
Split-view/new tab now respects the last view active view's tree view setting if the view was Details-view. -
Thunar Critical on exit.