World info now persist through reloads.

src/main/java/ca/recrown/islandsurvivalcraft/IslandSurvivalCraft.java

@@ -11,10 +11,13 @@ public class IslandSurvivalCraft extends JavaPlugin implements Listener {
     private PluginManager pluginManager;
     private WorldInfoManager worldInfos;
 
+    public IslandSurvivalCraft() {
+        worldInfos = new WorldInfoManager();
+    }
+    
     @Override
     public void onEnable() {
         pluginManager = getServer().getPluginManager();
-        worldInfos = new WorldInfoManager();
         pluginManager.registerEvents(worldInfos, this);
         super.onEnable();
     }