Infinite Abyss

1.7.1 Changelog:

Fixed several bugs/oversights Improved a few tooltips Added Mushroomy Deepstone and Fourth Layer Mycelium to improve the Fourth Layer generation Added Hanging Glowshroom and Hanging Shroom structures Added several items/blocks/mobs to forge/minecraft tags

Not everything from the 1.19 and 1.20 updates has been added, since some things would take a while to add (and were more decoration than really affecting gameplay) and some just don't work in this version. Major changes to future 1.19 and 1.20 versions might get backported but it depends if this version is actually used much anymore.