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/0106-Add-EntityTeleportEndGatewayEvent.patch

@@ -1,4 +1,4 @@
-From dbf6e3d0d411003e38f9fd4f9ccf156d9aa05a5b Mon Sep 17 00:00:00 2001
+From 6a88e74da088408754dfd5b6e3d59087c944776b Mon Sep 17 00:00:00 2001
 From: Shane Freeder <theboyetronic@gmail.com>
 Date: Sat, 9 Jun 2018 13:08:21 +0100
 Subject: [PATCH] Add EntityTeleportEndGatewayEvent
@@ -42,5 +42,5 @@ index 000000000..bfc69a43c
 +
 +}
 -- 
-2.25.1
+2.26.2