Updated Upstream (Paper)

Upstream has released updates that appears to apply and compile correctly

Paper Changes:
ab74bb45 Speed up processing of chunk loads and generation
f5dd491f Increase Light Queue Size
9ab69348 Don't load chunks when attempting to unload a chunk
38c62622 Improve Optimize Memory use logic to make iterator safer and fix bad plugins like P2

patches/server/0123-Tuinity-Delay-chunk-unloads.patch

@@ -1,4 +1,4 @@
-From 8f252f1536581e5d6fa968503d254b706c908512 Mon Sep 17 00:00:00 2001
+From 1be20ba4b362f4e35ab907fc9ba3216254449c52 Mon Sep 17 00:00:00 2001
 From: Spottedleaf <Spottedleaf@users.noreply.github.com>
 Date: Fri, 25 Oct 2019 02:11:30 -0700
 Subject: [PATCH] Tuinity - Delay chunk unloads
@@ -210,11 +210,11 @@ index 6a3723202c..eda4be515c 100644
 +    }
  }
 diff --git a/src/main/java/org/bukkit/craftbukkit/CraftWorld.java b/src/main/java/org/bukkit/craftbukkit/CraftWorld.java
-index 8cb9296c36..dac94ec0fe 100644
+index 7596fe4e3f..68e1c0c126 100644
 --- a/src/main/java/org/bukkit/craftbukkit/CraftWorld.java
 +++ b/src/main/java/org/bukkit/craftbukkit/CraftWorld.java
-@@ -476,6 +476,7 @@ public class CraftWorld implements World {
-         net.minecraft.server.IChunkAccess chunk = world.getChunkProvider().getChunkAt(x, z, ChunkStatus.FULL, false);
+@@ -485,6 +485,7 @@ public class CraftWorld implements World {
+         net.minecraft.server.IChunkAccess chunk = world.getChunkProvider().getChunkAtIfLoadedImmediately(x, z); // Paper
          if (chunk != null) {
              world.getChunkProvider().removeTicket(TicketType.PLUGIN, chunk.getPos(), 1, Unit.INSTANCE);
 +            ((ChunkMapDistance)world.getChunkProvider().playerChunkMap.getChunkMapDistanceManager()).removeTickets(ChunkCoordIntPair.pair(x, z), TicketType.DELAYED_UNLOAD); // Purpur - delay chunk unloads - let plugins override