Install
Upload it under Plugins → Add New Plugin → Upload Plugin, then activate.
Install straight from GitHub with WP-CLI:
wp plugin install https://github.com/rish-inc/updatetest/releases/download/2.0.0/updatetest.zipUpdates itself. It ships its own updater, so new versions appear under Dashboard → Updates.
Update test
Releases
2 releases. Each count is every asset in that release; expand a row for the breakdown.
Tag
Published
Assets
Downloads
Active-site estimate ≈10 comes from the median of recent superseded releases. Method.