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/0121-PlayerLaunchProjectileEvent.patch

@@ -1,4 +1,4 @@
-From d5c86c51ddc1719c0e082c9511c566b5643f6e52 Mon Sep 17 00:00:00 2001
+From ef9dc8ae78cf9fd1838a2e266c50b4c5f2c7cc34 Mon Sep 17 00:00:00 2001
 From: BillyGalbreath <Blake.Galbreath@GMail.com>
 Date: Sat, 21 Jul 2018 03:10:50 -0500
 Subject: [PATCH] PlayerLaunchProjectileEvent
@@ -94,5 +94,5 @@ index 000000000..9074b2ede
 +    }
 +}
 -- 
-2.25.1
+2.26.2