Toggleable player crits, helps mitigate hacked clients. (#1040)

This is a port of https://github.com/PaperMC/Paper/blob/ver/1.8.8/Spigot-Server-Patches/0040-Toggleable-player-crits-helps-mitigate-hacked-client.patch
Also adds me to the MIT list.

Spigot-API-Patches/0006-Add-async-chunk-load-API.patch

@@ -1,18 +1,17 @@
-From fcbdb6e87df51ee39a544433fea61dc4382325df Mon Sep 17 00:00:00 2001
+From 09eb3c8e3b1d9927cba4ef385e4a0b331ccac59c Mon Sep 17 00:00:00 2001
 From: Aikar <aikar@aikar.co>
 Date: Mon, 29 Feb 2016 17:43:33 -0600
 Subject: [PATCH] Add async chunk load API
 
 
 diff --git a/src/main/java/org/bukkit/World.java b/src/main/java/org/bukkit/World.java
-index 67b0d516..21b2733f 100644
+index 9b6eb48..561ef0e 100644
 --- a/src/main/java/org/bukkit/World.java
 +++ b/src/main/java/org/bukkit/World.java
-@@ -136,6 +136,78 @@ public interface World extends PluginMessageRecipient, Metadatable {
-      */
+@@ -137,6 +137,78 @@ public interface World extends PluginMessageRecipient, Metadatable {
      public Chunk getChunkAt(Block block);
  
-+    /**
+     /**
 +     * Used by {@link World#getChunkAtAsync(Location,ChunkLoadCallback)} methods
 +     * to request a {@link Chunk} to be loaded, with this callback receiving
 +     * the chunk when it is finished.
@@ -84,9 +83,10 @@ index 67b0d516..21b2733f 100644
 +     */
 +    public void getChunkAtAsync(Block block, ChunkLoadCallback cb);
 +
-     /**
++    /**
       * Checks if the specified {@link Chunk} is loaded
       *
+      * @param chunk The chunk to check
 -- 
-2.14.1
+2.7.4