Our RepoMan free plugin is designed to work alongside Git Updater, and in fact, only plugins that support Git Updater are currently allowed to be added to our collection of GitHub hosted plugins in the plugin-repos.json
internal file in RepoMan.
The idea is that RepoMan adds not just an easy way to install plugins from GitHub but also some minor quality control to ensure that only plugins that can receive automatic updates (and have tagged versions) are installed.