[1.20.1] Add Forge/NeoForge 1.20.1 support via a shared platform core and fix misc bugs - #1022

[1.20.1] Add Forge/NeoForge 1.20.1 support via a shared platform core and fix misc bugs#1022

jmcjm wants to merge 13 commits into

PG85:1.20.1PG85/OpenTerrainGenerator:1.20.1from

jmcjm:1.20.1-forgejmcjm/OpenTerrainGenerator:1.20.1-forgeCopy head branch name to clipboard