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/Slider/setSymbol.md

@@ -1,18 +1,35 @@
 ## setSymbol
-Changes the slider symbol, default is " "
 
-#### Parameters: 
+### Description
+
+Changes the slider symbol. The default symbol is a space " ".
+
+### Parameters
+
 1. `string` symbol
 
-#### Returns:
+### Returns
+
 1. `object` The object in use
 
-#### Usage:
-* Creates a new slider and changes the symbol to X
+### Usage
+
+* Creates a new slider and changes the symbol to "X":
+
 ```lua
+local basalt = require("basalt")
+
 local mainFrame = basalt.createFrame()
-local slider = mainFrame:addSlider():setSymbol("X")
+local slider = mainFrame:addSlider()
+  :setPosition(3, 3)
+  :setSize(1, 10)
+  :setSymbol("X")
+
+basalt.autoUpdate()
 ```
+
+In this example, a Slider object is created and added to the mainFrame. The getPosition, setSize, and setSymbol methods are used to adjust the position, size, and symbol of the Slider. The slider's symbol is set to "X".
+
 ```xml
 <slider symbol="X" />
-```
+```