Updated Upstream (Paper)

Upstream has released updates that appears to apply and compile correctly

Paper Changes:
7caed1a8 [CI-SKIP] Rebuild patches
777073a5 Check horse entity validity in container interactions (#2584)
d69fe6c5 Fix zero-tick instant grow farms MC-113809 (#2559)
c68dbb86 Updated Upstream (Bukkit/CraftBukkit/Spigot) (#2576)
1e521994 Update Paperclip
30f9955e Fix race conditions in flush allowing for previously scheduled tasks to execute later than the flush call (#2548)
9e1620e3 Improve save logic (#2485)
72860501 [CI-SKIP] Fix duplicate patch number
87355875 Fix nether portal frame creation (#2546)
26acc9b7 Re-add flat bedrock config option

patches/server/0053-Advancement-stuffs.patch

@@ -0,0 +1,24 @@
+From 3417eded091bd2c030ad35dde9a48739601067ca Mon Sep 17 00:00:00 2001
+From: William Blake Galbreath <blake.galbreath@gmail.com>
+Date: Sun, 11 Aug 2019 22:25:33 -0500
+Subject: [PATCH] Advancement stuffs
+
+---
+ src/main/java/net/minecraft/server/CriterionTrigger.java | 1 +
+ 1 file changed, 1 insertion(+)
+
+diff --git a/src/main/java/net/minecraft/server/CriterionTrigger.java b/src/main/java/net/minecraft/server/CriterionTrigger.java
+index 4fe732447..6e5d81daf 100644
+--- a/src/main/java/net/minecraft/server/CriterionTrigger.java
++++ b/src/main/java/net/minecraft/server/CriterionTrigger.java
+@@ -27,6 +27,7 @@ public interface CriterionTrigger<T extends CriterionInstance> {
+             this.c = s;
+         }
+ 
++        public T getInstance() { return a(); } // Purpur - OBFHELPER
+         public T a() {
+             return this.a;
+         }
+-- 
+2.23.0.rc1
+