Above it's an example of new superflat world

[Delta Chunk](https://www.curseforge.com/minecraft/mc-mods/delta-chunk) is a 1.21.1 neoforge mod. I made it because most of mods about world size need to change format from mca to the other or have low compatibility with manymods. Therefore, I made it a mod with following features:

* A mod that try to reduce the size of region.
* It only save what cannot be generated by seed like `what player put/break, block entity...`
* And still use `.mca` format
* Support multi-mod environment like `most of optimization mods, aether, aoa3`but doesn't compatible with The Twilight Forest
* use commands to add or remove what should save
* also has enchantments to use similar effect of following commands /deltachunk add x1 y1 z1 x2 y2 z2 /deltachunk delete x1 y1 z2 x2 y2 z2

# Warning

**Backup your world before add this mod and use above commands to make sure your house in a old world would be saved.(only old world need that because my mod don't known these blocks are put by player or generator before you put/break them)**

* no-recommand to multi-player server because of protential bugs and using cpu resource to exchange region size is not cost-effective
* It is important to save your portal with `break/put a blcok around the portal`, `/deltachunk add` or any item with `delta add`enchantment after entering an new dimension

I made a mod that makes minecraft worlds significantly smaller while keeping the original .mca format