FWIW there is no Go 'dependency' unless you want to build from source.

Admittedly if there's no binary available for your platform then you need to build from source.

Indeed it looks like it's doing something very similar, I didn't know about it. I guess one advantage of massren is that it can work with any text editor. The demo is with vim but, for example, on my machine I've set it up to use Sublime Text.