Finish mixin diff review

The mixin diff review looks OK, but need to check the
patch diff now.

moonrise_update_1_21_2.txt

@@ -1,7 +1,4 @@
-reference comparison:
-https://github.com/Tuinity/Moonrise/compare/6a2c6d27df11d417c1fefa749109d8e87599e8c2...f22335f0b65e205831c74a7b4b8f4d93fff54fd5
-
-
 todo:
-- need to compare the diffs
+- need to compare the patch diff for moonrise
 - in ChunkEntitySlices, implement modifySavedEntities() by copying from old
+- port poi_lookup?

patches/server/Moonrise-optimisation-patches.patch

@@ -23878,6 +23878,12 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
  
      }
  
+     public boolean blockChanged(BlockPos pos) {
+-        LevelChunk chunk = this.getTickingChunk();
++        LevelChunk chunk = this.playersSentChunkTo.size() == 0 ? null : this.getChunkToSend(); // Paper - rewrite chunk system
+ 
+         if (chunk == null) {
+             return false;
 @@ -0,0 +0,0 @@ public class ChunkHolder extends GenerationChunkHolder {
              return false;
          } else {
@@ -31889,8 +31895,8 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
 +    private final ca.spottedleaf.moonrise.common.list.ShortList tickingBlocks = new ca.spottedleaf.moonrise.common.list.ShortList();
 +
 +    @Override
-+    public final int moonrise$getSpecialCollidingBlocks() {
-+        return this.specialCollidingBlocks;
++    public final boolean moonrise$hasSpecialCollidingBlocks() {
++        return this.specialCollidingBlocks != 0;
 +    }
 +
 +    @Override