Basalt 1.7 Update

- New Objects (Flexbox, Graph, Treeview)
- Pluginsystem to add/remove functionality
- Reworked the entire Object system, instead of one big Object Class we have multiple classes: Object, VisualObject, ChangeableObject
- Instead of one big Frame Class we have multiple Frame Classes: BaseFrame, Frame, MovableFrame, ScrollableFrame, MonitorFrame, Flexbox
- Removed the Animation Object, and added a animation plugin instead
- Removed the Graphic Object and merged it's functionality with the image object
- Updated currently existing objects

docs/objects/Object/onLeave.md

@@ -1,12 +1,18 @@
-# Object - Event
-
 ## onLeave
 
+### Description
+
 `onLeave(self, event, button, x, y)`
 
-The computercraft event which triggers this method is `mouse_move` - only available in [CraftOS-PC](https://www.craftos-pc.cc).
+The onLeave event is triggered when the mouse pointer leaves the object. The event is based on the mouse_move event, which is only available in [CraftOS-PC](https://www.craftos-pc.cc).
 
-Here is a example on how to add a onLeave event to your button:
+### Returns
+
+1. `object` The object in use
+
+### Usage
+
+* Add an onLeave event to a button:
 
 ```lua
 local basalt = require("basalt")