Lots of updates:

1. Scrolling and click to set the cursor works.
2. GUI now uses Brass Mono as the font.
3. A lot of stability and other updates.

Renderer.h

@@ -4,12 +4,14 @@
 #ifndef KTE_RENDERER_H
 #define KTE_RENDERER_H
 
+
 class Editor;
 
 class Renderer {
 public:
-    virtual ~Renderer() = default;
-    virtual void Draw(const Editor &ed) = 0;
+	virtual ~Renderer() = default;
+
+	virtual void Draw(Editor &ed) = 0;
 };
 
 #endif // KTE_RENDERER_H