Updated Upstream (CraftBukkit)

Upstream has released updates that appears to apply and compile correctly.
This update has not been tested by PaperMC and as with ANY update, please do your own testing

CraftBukkit Changes:
a339310c #755: Fix NPE when calling getInventory() for virtual EnderChests
2577f9bf Increase outdated build delay
1dabfdc8 #754: Fix pre-1.16 serialized SkullMeta being broken on 1.16+, losing textures

Spigot-Server-Patches/Add-setPlayerProfile-API-for-Skulls.patch

@@ -51,10 +51,10 @@ diff --git a/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaSkull.java
 index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000 100644
 --- a/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaSkull.java
 +++ b/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaSkull.java
-@@ -0,0 +0,0 @@ package org.bukkit.craftbukkit.inventory;
- import com.google.common.collect.ImmutableMap.Builder;
+@@ -0,0 +0,0 @@ import com.google.common.collect.ImmutableMap.Builder;
  import com.mojang.authlib.GameProfile;
  import java.util.Map;
+ import java.util.UUID;
 +import com.destroystokyo.paper.profile.CraftPlayerProfile;
 +import com.destroystokyo.paper.profile.PlayerProfile;
  import net.minecraft.server.GameProfileSerializer;

Spigot-Server-Patches/Fix-NPE-when-getting-location-from-InventoryEnderChe.patch

@@ -1,28 +0,0 @@
-From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
-From: Shane Freeder <theboyetronic@gmail.com>
-Date: Sat, 10 Mar 2018 13:03:49 +0000
-Subject: [PATCH] Fix NPE when getting location from InventoryEnderChest opened
- by plugins
-
-
-diff --git a/src/main/java/net/minecraft/server/InventoryEnderChest.java b/src/main/java/net/minecraft/server/InventoryEnderChest.java
-index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000 100644
---- a/src/main/java/net/minecraft/server/InventoryEnderChest.java
-+++ b/src/main/java/net/minecraft/server/InventoryEnderChest.java
-@@ -0,0 +0,0 @@ import org.bukkit.inventory.InventoryHolder;
- 
- public class InventoryEnderChest extends InventorySubcontainer {
- 
--    private TileEntityEnderChest a;
-+    private TileEntityEnderChest a; public TileEntityEnderChest getTileEntity() { return a; } // Paper - OBFHELPER
-     // CraftBukkit start
-     private final EntityHuman owner;
- 
-@@ -0,0 +0,0 @@ public class InventoryEnderChest extends InventorySubcontainer {
- 
-     @Override
-     public Location getLocation() {
-+        if (getTileEntity() == null) return null; // Paper - return null if there is no TE bound (opened by plugin)
-         return new Location(this.a.getWorld().getWorld(), this.a.getPosition().getX(), this.a.getPosition().getY(), this.a.getPosition().getZ());
-     }
- 

Spigot-Server-Patches/Fix-this-stupid-bullshit.patch

@@ -14,7 +14,7 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
 +++ b/src/main/java/org/bukkit/craftbukkit/Main.java
 @@ -0,0 +0,0 @@ public class Main {
                      Calendar deadline = Calendar.getInstance();
-                     deadline.add(Calendar.DAY_OF_YEAR, -7);
+                     deadline.add(Calendar.DAY_OF_YEAR, -21);
                      if (buildDate.before(deadline.getTime())) {
 -                        System.err.println("*** Error, this build is outdated ***");
 +                        // Paper start - This is some stupid bullshit

Spigot-Server-Patches/POM-Changes.patch

@@ -207,7 +207,7 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
 +                    Date buildDate = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss'Z'").parse(Main.class.getPackage().getImplementationVendor()); // Paper
  
                      Calendar deadline = Calendar.getInstance();
-                     deadline.add(Calendar.DAY_OF_YEAR, -7);
+                     deadline.add(Calendar.DAY_OF_YEAR, -21);
 diff --git a/src/main/java/org/bukkit/craftbukkit/util/Versioning.java b/src/main/java/org/bukkit/craftbukkit/util/Versioning.java
 index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000 100644
 --- a/src/main/java/org/bukkit/craftbukkit/util/Versioning.java

Spigot-Server-Patches/Show-Paper-in-client-crashes-server-lists-and-Mojang.patch

@@ -49,7 +49,7 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
 --- a/src/main/java/org/bukkit/craftbukkit/Main.java
 +++ b/src/main/java/org/bukkit/craftbukkit/Main.java
 @@ -0,0 +0,0 @@ public class Main {
-                     deadline.add(Calendar.DAY_OF_YEAR, -7);
+                     deadline.add(Calendar.DAY_OF_YEAR, -21);
                      if (buildDate.before(deadline.getTime())) {
                          System.err.println("*** Error, this build is outdated ***");
 -                        System.err.println("*** Please download a new build as per instructions from https://www.spigotmc.org/go/outdated-spigot ***");

work/CraftBukkit

@@ -1 +1 @@
-Subproject commit f8d4da08e17c3b6e7147af8a945301535329bba3
+Subproject commit a339310c48548f0f82f923ff3f5fe2cdc7a8e8ba