Conway4 needed to change for the new patch.clone()

src/rules/Conway4.java

@@ -15,7 +15,7 @@ public class Conway4 extends RuleSet {
                 int numAlive = 0;
                 for (Patch p : neighbors)
                     if (p.getState() == 1) numAlive++;
-                Patch p = g.getPatch(i,j).clone();
+                Patch p = g.getPatch(i,j).clone(newGrid);
                 if (numAlive < 2) {
                     p.setState(0); //Dies by underpopulation
                 }