disabled prop? #40
Description
I guess that right now I could disable dragging the tree by setting cross-tree to false, but that's more using a bug than a feature.
I have a tree that - using your component - is used for both reordering the tree and allowing users to edit node-attributes.
To distinguish the two, I would like a setting that turns off drag&drop for the whole tree.
Ideally the prop would also turn off the start-drag effect (right now you can still pick it up, you just can't drop it anywhere).