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/VisualObject/getWidth.md

@@ -0,0 +1,22 @@
+## getWidth
+
+### Description
+
+Returns the object's width.
+
+### Returns
+
+1. `number` width
+
+### Usage
+
+* Prints the width of a button to the debug console
+
+```lua
+local basalt = require("basalt")
+
+local mainFrame = basalt.createFrame()
+local aButton = mainFrame:addButton():setSize(10, 3)
+local w = aButton:getWidth()
+basalt.debug("Button width: " .. w) -- prints "Button width: 10"
+```