1.15.2 update (#2887)

Functional GUI fix added by billygalbreath

Spigot-Server-Patches/0018-Implement-Paper-VersionChecker.patch

@@ -1,4 +1,4 @@
-From 2d3fd16046dd4deee5a2cd2f7f5cac0bf53c138e Mon Sep 17 00:00:00 2001
+From bac68a867c1c4a2bb7b52bba4068b106a274fcc0 Mon Sep 17 00:00:00 2001
 From: Zach Brown <zach@zachbr.io>
 Date: Mon, 27 May 2019 03:40:05 -0500
 Subject: [PATCH] Implement Paper VersionChecker
@@ -126,7 +126,7 @@ index 000000000..5deed3e25
 +    }
 +}
 diff --git a/src/main/java/org/bukkit/craftbukkit/util/CraftMagicNumbers.java b/src/main/java/org/bukkit/craftbukkit/util/CraftMagicNumbers.java
-index 48a191ae0..21bfdf9e7 100644
+index 50a69e4cb..9fed3cd5d 100644
 --- a/src/main/java/org/bukkit/craftbukkit/util/CraftMagicNumbers.java
 +++ b/src/main/java/org/bukkit/craftbukkit/util/CraftMagicNumbers.java
 @@ -293,6 +293,11 @@ public final class CraftMagicNumbers implements UnsafeValues {
@@ -142,5 +142,5 @@ index 48a191ae0..21bfdf9e7 100644
  
      /**
 -- 
-2.24.1
+2.25.0.windows.1