Default configuration changes

Disable push based hoppers by default
Set chunk unload delay to 15s by default
Neither of these changes are retroactive for old users

Spigot-Server-Patches/Delay-Chunk-Unloads-based-on-Player-Movement.patch

@@ -22,12 +22,12 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
 +++ b/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
 @@ -0,0 +0,0 @@ public class PaperWorldConfig {
      private void isHopperPushBased() {
-         isHopperPushBased = getBoolean("hopper.push-based", true);
+         isHopperPushBased = getBoolean("hopper.push-based", false);
      }
 +
 +    public long delayChunkUnloadsBy;
 +    private void delayChunkUnloadsBy() {
-+        delayChunkUnloadsBy = PaperConfig.getSeconds(getString("delay-chunk-unloads-by", "0s"));
++        delayChunkUnloadsBy = PaperConfig.getSeconds(getString("delay-chunk-unloads-by", "10s"));
 +        if (delayChunkUnloadsBy > 0) {
 +            log("Delaying chunk unloads by " + delayChunkUnloadsBy + " seconds");
 +            delayChunkUnloadsBy *= 1000;

Spigot-Server-Patches/Make-entities-look-for-hoppers.patch

@@ -88,7 +88,7 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
 +
 +    public boolean isHopperPushBased;
 +    private void isHopperPushBased() {
-+        isHopperPushBased = getBoolean("hopper.push-based", true);
++        isHopperPushBased = getBoolean("hopper.push-based", false);
 +    }
  }
 diff --git a/src/main/java/net/minecraft/server/AxisAlignedBB.java b/src/main/java/net/minecraft/server/AxisAlignedBB.java