Updated Upstream (Paper & Tuinity)

Upstream has released updates that appear to apply and compile correctly

Paper Changes:
b33b63908e Support complex components in written book builder (#6337)
bfb3d42b44 Optimize entity tracker passenger checks (#6361)
399710ff79 Add reobf mappings patch for MinecraftServer#getLootTables (#6368)
25cd8aba9f Config option for Piglins guarding chests (#4829)
80650e8936 Added EntityItemDamageEvent (#4928)

Tuinity Changes:
8e7cc4dc96 Do not submit profile lookups to worldgen threads

patches/server/0146-Add-MC-4-fix-back.patch

@@ -0,0 +1,19 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: William Blake Galbreath <Blake.Galbreath@GMail.com>
+Date: Thu, 7 Jan 2021 07:51:25 -0600
+Subject: [PATCH] Add MC-4 fix back
+
+
+diff --git a/src/main/java/net/minecraft/world/entity/Entity.java b/src/main/java/net/minecraft/world/entity/Entity.java
+index bd9293161dd28153d102718720b8f8a3c54536ad..8918fd02f4930eacb4fd842add92bc4e682642ae 100644
+--- a/src/main/java/net/minecraft/world/entity/Entity.java
++++ b/src/main/java/net/minecraft/world/entity/Entity.java
+@@ -4034,7 +4034,7 @@ public abstract class Entity implements Nameable, EntityAccess, CommandSource, n
+         // Paper end
+         // Paper start - fix MC-4
+         if (this instanceof ItemEntity) {
+-            if (false && com.destroystokyo.paper.PaperConfig.fixEntityPositionDesync) { // Tuinity - revert
++            if (com.destroystokyo.paper.PaperConfig.fixEntityPositionDesync) { // Purpur
+                 // encode/decode from PacketPlayOutEntity
+                 x = Mth.lfloor(x * 4096.0D) * (1 / 4096.0D);
+                 y = Mth.lfloor(y * 4096.0D) * (1 / 4096.0D);