Updated Upstream (Bukkit/CraftBukkit/Spigot)

Upstream has released updates that appear 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:
810cb078 Add hideEntity / showEntity API

CraftBukkit Changes:
04f8e7e2 SPIGOT-6814: (Chunk) PersistentData is lost after restart
37fd1917 Add hideEntity / showEntity API
7e2214da Move checkstyle to slightly later compile phase
45c3f826 SPIGOT-6816: Fix ChunkSnapshot#getBiome

Spigot Changes:
b11f318f Rebuild patches
622b2310 SPIGOT-6811: Fix mob spawning mismatch
2b2a3d56 Rebuild patches

patches/server/0026-Only-refresh-abilities-if-needed.patch

@@ -5,10 +5,10 @@ Subject: [PATCH] Only refresh abilities if needed
 
 
 diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
-index 4aa8ec18b0eeae23f9913878111af538e29d4f5b..a41590739e22feb4aebfd7192ebd1f77868dc07c 100644
+index 27eb934e762fb67dd69804d463e00a99e4431b16..4fb53ca63cc4f5fbb58266d5c76821039036bb85 100644
 --- a/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
 +++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
-@@ -1448,12 +1448,13 @@ public class CraftPlayer extends CraftHumanEntity implements Player {
+@@ -1469,12 +1469,13 @@ public class CraftPlayer extends CraftHumanEntity implements Player {
  
      @Override
      public void setFlying(boolean value) {