Perfect Parity: Spring To Life Edition

I was sick of Mojang changing and breaking so many mods every update. I wanted to play with my modpack but didn't want to wait for the new features. So this mod asks: "Why not both?"

Unlike many backport mods, this does minor version backport mod aim to backport between *major* versions (e.g., 1.21 → 1.20). Instead, it's a minor version backport mod — most mods I personally use are on 1.21.1 or 1.21.4. I don’t think it’s fair to choose between new features and mod compatibility.