Refactoring

* rewritten marks (more performance for multiple vertices)
* fixed a bunch of instructions
* added a starting point for save/load graph instructions

src/berack96/sim/util/graph/view/GraphWindow.java

@@ -50,7 +50,6 @@ public class GraphWindow<V, W extends Number> extends JFrame {
 
         this.infoPanel = new GraphInfo<>(graphPanel, vListener, eListener, strats);
         this.graphPanel = graphPanel;
-
         this.add(infoPanel, BorderLayout.EAST);
         this.add(graphPanel);
     }