Updated Upstream (Paper)

Upstream has released updates that appear to apply and compile correctly

Paper Changes:
7232d8f2a EntityLoadCrossbowEvent#shouldConsumeItem
4740bd6c8 Mark PlayerInventory#getItem as nullable
bd9ace578 Add a config option to limit the number of entities of each type to load/save in a chunk (#4792)
6bafeb5a9 Move logic from last patch into correct place
9668118fd disable entity ticking flag after watchdog obliteration

patches/server/0070-Add-canSaveToDisk-to-Entity.patch

@@ -0,0 +1,35 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: William Blake Galbreath <Blake.Galbreath@GMail.com>
+Date: Tue, 18 Feb 2020 20:07:08 -0600
+Subject: [PATCH] Add canSaveToDisk to Entity
+
+
+diff --git a/src/main/java/net/minecraft/server/ChunkRegionLoader.java b/src/main/java/net/minecraft/server/ChunkRegionLoader.java
+index 090e5eafeb35c60fb470b74863d59ed4a4f66be8..fc0bb651878633f778623e9b91ba110bd341f5d3 100644
+--- a/src/main/java/net/minecraft/server/ChunkRegionLoader.java
++++ b/src/main/java/net/minecraft/server/ChunkRegionLoader.java
+@@ -536,6 +536,7 @@ public class ChunkRegionLoader {
+ 
+                 while (iterator1.hasNext()) {
+                     Entity entity = (Entity) iterator1.next();
++                    if (!entity.canSaveToDisk()) continue; // Purpur
+                     final EntityTypes<?> entityType = entity.getEntityType();
+                     final int saveLimit = worldserver.paperConfig.entityPerChunkSaveLimits.getOrDefault(entityType, -1);
+                     if (saveLimit > -1) {
+diff --git a/src/main/java/net/minecraft/server/Entity.java b/src/main/java/net/minecraft/server/Entity.java
+index 1210b1d2ac1b129342d80c2a47cd79e1c21be2a5..79f418054f91184b73759296cef15beb410edeae 100644
+--- a/src/main/java/net/minecraft/server/Entity.java
++++ b/src/main/java/net/minecraft/server/Entity.java
+@@ -308,6 +308,12 @@ public abstract class Entity implements INamableTileEntity, ICommandListener, Ke
+         this.headHeight = this.getHeadHeight(EntityPose.STANDING, this.size);
+     }
+ 
++    // Purpur start
++    public boolean canSaveToDisk() {
++        return true;
++    }
++    // Purpur end
++
+     public boolean isSpectator() {
+         return false;
+     }