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/0082-PlayerAdvancementCriterionGrantEvent.patch

@@ -1,4 +1,4 @@
-From 16e6184f6baaa78ed043b38ab35a19ddbd296c21 Mon Sep 17 00:00:00 2001
+From 34cad9effb5ade48de65055b9afa0eb5aae8848c Mon Sep 17 00:00:00 2001
 From: BillyGalbreath <Blake.Galbreath@GMail.com>
 Date: Fri, 19 Jan 2018 08:15:14 -0600
 Subject: [PATCH] PlayerAdvancementCriterionGrantEvent
@@ -74,5 +74,5 @@ index 000000000..bb8d7c959
 +    }
 +}
 -- 
-2.25.1
+2.26.2