First idea implementation

bukkit-helper-118/src/main/java/org/dynmap/bukkit/helper/v118/BukkitVersionHelperSpigot118.java

@@ -63,13 +63,20 @@ import java.util.Set;
 /**
  * Helper for isolation of bukkit version specific issues
  */
-public class BukkitVersionHelperSpigot118 extends BukkitVersionHelper { 
-		
-    public BukkitVersionHelperSpigot118() {
-    	
+public class BukkitVersionHelperSpigot118 extends BukkitVersionHelper {
+
+	  private final boolean unsafeAsync;
+
+	  public BukkitVersionHelperSpigot118() {
+    	this.unsafeAsync = true;
     }
-    
-    /**
+
+	  @Override
+	  public boolean isUnsafeAsync() {
+		return unsafeAsync;
+	}
+
+	  /**
      * Get block short name list
      */
     @Override