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/setShadow.md

@@ -0,0 +1,30 @@
+## setShadow
+
+### Description
+
+Sets the shadow color - default: false
+
+### Parameters
+
+1. `number|color` Shadow color
+
+#### Returns
+
+1. `object` The object in use
+
+#### Usage
+
+* Sets the shadow to green and shows it:
+
+```lua
+local mainFrame = basalt.createFrame()
+local subFrame = mainFrame:addMovableFrame()
+        :setSize(18,6)
+        :setShadow(colors.green)
+```
+
+Or:
+
+```xml
+<movableFrame width="18" height="6" shadowColor="green" />
+```