Proper derefs

src/main/java/com/volmit/iris/core/service/PreservationSVC.java

@@ -48,6 +48,8 @@ public class PreservationSVC implements IrisService {
     public void dereference() {
         IrisContext.dereference();
         IrisData.dereference();
+        threads.removeWhere((i) -> !i.isAlive());
+        services.removeWhere(ExecutorService::isShutdown);
     }
 
     @Override

src/main/java/com/volmit/iris/engine/IrisEngine.java

@@ -420,6 +420,7 @@ public class IrisEngine implements Engine {
         getData().clearLists();
         Iris.service(PreservationSVC.class).dereference();
         Iris.debug("Engine Fully Shutdown!");
+        complex = null;
     }
 
     @Override

src/main/java/com/volmit/iris/engine/framework/Engine.java

@@ -884,6 +884,7 @@ public interface Engine extends DataProvider, Fallible, LootProvider, BlockUpdat
             {
                 return sl.matches(engine, chunk);
             }
+
             return false;
         };
 

src/main/java/com/volmit/iris/engine/platform/BukkitChunkGenerator.java

@@ -234,6 +234,9 @@ public class BukkitChunkGenerator extends ChunkGenerator implements PlatformChun
             }
 
             getEngine().close();
+            folder.clear();
+            populators.clear();
+
         });
     }
 

src/main/java/com/volmit/iris/util/io/FolderWatcher.java

@@ -136,4 +136,11 @@ public class FolderWatcher extends FileWatcher {
     public KList<File> getDeleted() {
         return deleted;
     }
+
+    public void clear() {
+        watchers.clear();
+        changed.clear();
+        deleted.clear();
+        created.clear();
+    }
 }

src/main/java/com/volmit/iris/util/io/ReactiveFolder.java

@@ -89,4 +89,8 @@ public class ReactiveFolder {
 
         return fw.checkModified();
     }
+
+    public void clear() {
+        fw.clear();
+    }
 }

src/main/java/com/volmit/iris/util/mantle/Mantle.java

@@ -358,6 +358,7 @@ public class Mantle {
             Iris.reportError(e);
         }
 
+        loadedRegions.clear();
         Iris.debug("The Mantle has Closed " + C.DARK_AQUA + dataFolder.getAbsolutePath());
     }