[Auto] Updated Upstream (Bukkit/CraftBukkit/Spigot)

Upstream has released updates that appear 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:
5b289e69 SPIGOT-5778: Added World.getGameTime method

CraftBukkit Changes:
d97d91871 SPIGOT-6347: Nether Portals Default to Nether, even in Nether
8aa6a953f SPIGOT-5778: Added World.getGameTime method

Spigot Changes:
73fb6094 #107: Add async catching to chunk entity add/remove

Spigot-API-Patches/Add-sun-related-API.patch

@@ -23,7 +23,7 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
 +    // Paper end
 +
      /**
-      * Returns whether the world has an ongoing storm.
+      * Gets the full in-game time on this world since the world generation
       *
 diff --git a/src/main/java/org/bukkit/entity/Mob.java b/src/main/java/org/bukkit/entity/Mob.java
 index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000 100644

Spigot-Server-Patches/Add-sun-related-API.patch

@@ -32,8 +32,8 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
 +    // Paper end
 +
      @Override
-     public boolean createExplosion(double x, double y, double z, float power) {
-         return createExplosion(x, y, z, power, false, true);
+     public long getGameTime() {
+         return world.worldData.getTime();
 diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftMob.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftMob.java
 index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000 100644
 --- a/src/main/java/org/bukkit/craftbukkit/entity/CraftMob.java