Generic cleanup of warnings, whitespace and style.

src/main/java/org/bukkit/event/entity/ExplosionPrimeEvent.java

@@ -7,6 +7,7 @@ import org.bukkit.event.Cancellable;
 /**
  * Called when an entity has made a decision to explode.
  */
+@SuppressWarnings("serial")
 public class ExplosionPrimeEvent extends EntityEvent implements Cancellable {
     private boolean cancel;
     private float radius;