**Feature Request**
Brief title for your desired feature: **Deselect**
How would you like the feature to work?
**When you hold Ctrl and click a selected item, it should deselect it.**
Why is this feature important to you?
Ctrl-click can extend the current selection. But there is no way to deselect an item if you added it to the selection by mistake. Or if you need to select a whole area you can drag a selection window around the whole area but there is no way to remove just one item.
Brand new interactions and interfaces. 
Easy to use and quick to get started. 
