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/getShadow.md

@@ -0,0 +1,24 @@
+## getShadow
+
+### Description
+
+Returns the current shadow color of the object.
+
+### Returns
+
+1. `number|boolean` Shadow color or false if no shadow is set
+
+### Usage
+
+* Prints the shadow color of a frame to the debug console
+
+```lua
+local basalt = require("basalt")
+
+local mainFrame = basalt.createFrame()
+local subFrame = mainFrame:addMovableFrame()
+        :setSize(18,6)
+        :setShadow(colors.green)
+
+basalt.debug(subFrame:getShadow()) -- returns colors.green or false if no shadow is set
+```