Allow proto chunks to be saved again

Appear to be used more extensively in 1.14. Subject to further review.

Spigot-Server-Patches/0358-BlockDestroyEvent.patch

@@ -0,0 +1,41 @@
+From e4e8eb871eb4c2e2ee8f9752ed648055a988f592 Mon Sep 17 00:00:00 2001
+From: Aikar <aikar@aikar.co>
+Date: Wed, 6 Feb 2019 00:20:33 -0500
+Subject: [PATCH] BlockDestroyEvent
+
+Adds an event for when the server is going to destroy a current block,
+potentially causing it to drop. This event can be cancelled to avoid
+the block destruction, such as preventing signs from popping when
+floating in the air.
+
+This can replace many uses of BlockPhysicsEvent
+
+diff --git a/src/main/java/net/minecraft/server/World.java b/src/main/java/net/minecraft/server/World.java
+index f811ef8cc..032419155 100644
+--- a/src/main/java/net/minecraft/server/World.java
++++ b/src/main/java/net/minecraft/server/World.java
+@@ -486,8 +486,20 @@ public abstract class World implements IIBlockAccess, GeneratorAccess, AutoClose
+             return false;
+         } else {
+             Fluid fluid = this.getFluid(blockposition);
++            // Paper start - while the above setAir method is named same and looks very similar
++            // they are NOT used with same intent and the above should not fire this event. The above method is more of a BlockSetToAirEvent,
++            // it doesn't imply destruction of a block that plays a sound effect / drops an item.
++            boolean playEffect = true;
++            if (com.destroystokyo.paper.event.block.BlockDestroyEvent.getHandlerList().getRegisteredListeners().length > 0) {
++                com.destroystokyo.paper.event.block.BlockDestroyEvent event = new com.destroystokyo.paper.event.block.BlockDestroyEvent(MCUtil.toBukkitBlock(this, blockposition), fluid.getBlockData().createCraftBlockData(), flag);
++                if (!event.callEvent()) {
++                    return false;
++                }
++                playEffect = event.playEffect();
++            }
++            // Paper end
+ 
+-            this.triggerEffect(2001, blockposition, Block.getCombinedId(iblockdata));
++            if (playEffect) this.triggerEffect(2001, blockposition, Block.getCombinedId(iblockdata)); // Paper
+             if (flag) {
+                 TileEntity tileentity = iblockdata.getBlock().isTileEntity() ? this.getTileEntity(blockposition) : null;
+ 
+-- 
+2.21.0
+