Updated Upstream (Bukkit/CraftBukkit/Spigot)

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:
af58d316 Fix javadoc warning in Firework.setShotAtAngle

CraftBukkit Changes:
e2dd6555 SPIGOT-5372: Re-add tile entity fixer due to MC-163945
1e7a197f Fix incorrect inequality in 683bae0670c
db98d54d SPIGOT-5362: Suspicious stews fail isSimilar check

Spigot Changes:
56f84710 Rebuild patches

Spigot-Server-Patches/Configurable-spawn-chances-for-skeleton-horses.patch

@@ -5,7 +5,7 @@ Subject: [PATCH] Configurable spawn chances for skeleton horses
 
 
 diff --git a/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java b/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
-index 98049567f4..2a71381dae 100644
+index 98049567f..2a71381da 100644
 --- a/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
 +++ b/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
 @@ -0,0 +0,0 @@ public class PaperWorldConfig {
@@ -22,7 +22,7 @@ index 98049567f4..2a71381dae 100644
 +    }
  }
 diff --git a/src/main/java/net/minecraft/server/WorldServer.java b/src/main/java/net/minecraft/server/WorldServer.java
-index 4ca79a774e..ee74a677a3 100644
+index b87d4d1bd..df3a9340a 100644
 --- a/src/main/java/net/minecraft/server/WorldServer.java
 +++ b/src/main/java/net/minecraft/server/WorldServer.java
 @@ -0,0 +0,0 @@ public class WorldServer extends World {