Updated Upstream (Bukkit/CraftBukkit/Spigot)

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

Bukkit Changes:
564ed152 #482: Add a DragonBattle API to manipulate respawn phases etc
9f2fd967 #474: Add ability to set other plugin names as provided API so others can still depend on it

CraftBukkit Changes:
fc318cc1 #642: Add a DragonBattle API to manipulate respawn phases etc
796eb15a #644: Fix ChunkMapDistance#removeAllTicketsFor not propagating ticket level updates
a6f80937 SPIGOT-5606: call BlockRedstoneEvent for fence gates

Spigot Changes:
a03b1fdb Rebuild patches

Spigot-API-Patches/0181-Add-Heightmap-API.patch

@@ -1,4 +1,4 @@
-From bdfb8acea9f01a1fcceca8598a330c073777ac3e Mon Sep 17 00:00:00 2001
+From ea93c9776bf204f612644a53d96fb4d64607baff Mon Sep 17 00:00:00 2001
 From: Spottedleaf <Spottedleaf@users.noreply.github.com>
 Date: Sat, 1 Dec 2018 19:00:36 -0800
 Subject: [PATCH] Add Heightmap API
@@ -89,10 +89,10 @@ index 77d9cd0a..59047503 100644
       * Creates explosion at this location with given power
       *
 diff --git a/src/main/java/org/bukkit/World.java b/src/main/java/org/bukkit/World.java
-index d0256af5..5047be15 100644
+index c88f1724..db18f70e 100644
 --- a/src/main/java/org/bukkit/World.java
 +++ b/src/main/java/org/bukkit/World.java
-@@ -159,6 +159,87 @@ public interface World extends PluginMessageRecipient, Metadatable {
+@@ -160,6 +160,87 @@ public interface World extends PluginMessageRecipient, Metadatable {
      @NotNull
      public Block getHighestBlockAt(@NotNull Location location);
  
@@ -181,5 +181,5 @@ index d0256af5..5047be15 100644
       * Gets the highest coordinate corresponding to the {@link HeightMap} at the
       * given coordinates.
 -- 
-2.25.0
+2.26.0