Updated Upstream (Bukkit/CraftBukkit)

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:
b999860d SPIGOT-2304: Add LootGenerateEvent

CraftBukkit Changes:
77fd87e4 SPIGOT-2304: Implement LootGenerateEvent
a1a705ee SPIGOT-5566: Doused campfires & fires should call EntityChangeBlockEvent
41712edd SPIGOT-5707: PersistentDataHolder not Persistent on API dropped Item

Spigot-API-Patches/0037-Add-EntityZapEvent.patch

@@ -1,4 +1,4 @@
-From 3e509ef8019f3efe28e265dbbbdae31c3f23d235 Mon Sep 17 00:00:00 2001
+From 8a1e728b8f151cf52deba5f2b7bee3ac0c2123a2 Mon Sep 17 00:00:00 2001
 From: AlphaBlend <whizkid3000@hotmail.com>
 Date: Sun, 16 Oct 2016 23:19:34 -0700
 Subject: [PATCH] Add EntityZapEvent
@@ -122,5 +122,5 @@ index 0e0ed93b5..d3949edfc 100644
 +    // Paper end
  }
 -- 
-2.25.1
+2.26.2