Feature request: Support ModUpdater

[dhouck]

ModUpdater is a Fabric mod that checks for and downloads updates to cooperating Fabric mods.

There are a couple ways to support ModUpdater, but none of them are quite straightforward here; it looks like you would either need to change the Jar file naming convention to put the AppleSkin version before the Minecraft version, or host and update a JSON file for which AppleSkin version you need for each minecraft version.