Obtain unobtainable items, blocks and entities in flat world.
List of features: Click here
When loading world warning pops up about usage of experimental settings. Datapack uses these to spawn geodes in end and to make snow and ice accesible. It shouldn't do anything to your world, but if you dont want it, simply remove the worldgen folder.
If you want to report a bug use github issues, if you want to contribute with ideas use github issue. If you want to contribute with code open github pull request.
Github: Click here
Youtube Tutorial: Click here
Youtube Tutorial for v2: Click here
Youtube Tutorial for v3+4: Click here