Aspect: add opposite

src/de/banananetwork/dsa/aspects/Aspect.java

@@ -9,6 +9,7 @@ public class Aspect implements Descriptiable, AdventurePointsPriceLabeled {
 	private final Kind kind;
 	private final Description description;
 	private final int apCost;
+	private final Aspect opposite;
 
 
 	@Override