1.15.2 update (#2887)

Functional GUI fix added by billygalbreath

Spigot-API-Patches/Expand-Location-Manipulation-API.patch

@@ -6,7 +6,7 @@ Subject: [PATCH] Expand Location Manipulation API
 Adds set(x, y, z), add(base, x, y, z), subtract(base, x, y, z);
 
 diff --git a/src/main/java/org/bukkit/Location.java b/src/main/java/org/bukkit/Location.java
-index b226d7e4c..884862ab7 100644
+index ac3c8eef..f87ecd0a 100644
 --- a/src/main/java/org/bukkit/Location.java
 +++ b/src/main/java/org/bukkit/Location.java
 @@ -0,0 +0,0 @@ public class Location implements Cloneable, ConfigurationSerializable {