[SPIGOT-946] Begin making use of access transforms to simplify patching.

By: md_5 <git@md-5.net>

paper-server/nms-patches/ContainerDispenser.patch

@@ -10,8 +10,7 @@
 +
  public class ContainerDispenser extends Container {
  
--    private IInventory items;
-+    public IInventory items; // CraftBukkit - private -> public
+     public IInventory items;
 +    // CraftBukkit start
 +    private CraftInventoryView bukkitEntity = null;
 +    private PlayerInventory player;