Ars Nouveau: Planarium Backport (unofficial)

This is an unofficial addon that brings features of the latest Ars Nouveau to 1.20.1.
Features currently include:
Planarium
Pantomime Glyph

The original mod is here and is required for this addon to function correctly:

ars_nouveau-1.20.1-4.12.7-all.jar
https://www.curseforge.com/minecraft/mc-mods/ars-nouveau

The Planarium has been given immersive portals support so that it won't crash if you have immersive portals added.

I plan to add more features in the future.