Process for taking over an abandoned mod?

I've just overhauled an MIT-licensed mod from this site that hasn't been touched in almost 3 years, whose author hasn't been responsive to user posts.

What is the process/etiquette for taking over the mod, or for posting my own "2.0" version of it so that others can benefit?

Depends on the plugin, feel free to send me a private message and we can discuss

DM'd a pastebin link to my code.