NOT FINISHED!!! Current Progress on 1.13-pre7 update

This work is 100% unfinished. I am pushing it up so that we as a team
can work on this update.

Do not try to use this branch. You will fail.

Spigot-Server-Patches/Sanitise-RegionFileCache-and-make-configurable.patch

@@ -25,13 +25,13 @@ index 2f6e169f5..ec4643384 100644
 +    }
  }
 diff --git a/src/main/java/net/minecraft/server/RegionFileCache.java b/src/main/java/net/minecraft/server/RegionFileCache.java
-index 5f9e9ddef..7e7565807 100644
+index 384628ccc..b335016fd 100644
 --- a/src/main/java/net/minecraft/server/RegionFileCache.java
 +++ b/src/main/java/net/minecraft/server/RegionFileCache.java
-@@ -0,0 +0,0 @@ import java.io.File;
- import java.io.IOException;
+@@ -0,0 +0,0 @@ import java.io.IOException;
  import java.util.Iterator;
  import java.util.Map;
+ import javax.annotation.Nullable;
 +import com.destroystokyo.paper.PaperConfig; // Paper
 +import java.util.LinkedHashMap; // Paper