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/kamrulhasan2/travelz-holidays/releases/download/v0.1.6/travelz-holidays-0.1.6.zipNo built-in updater. New versions won't appear under Dashboard → Updates. Install new releases yourself, or let Git Updater track the repository.
Releases
4 releases. Each count is every asset in that release; expand a row for the breakdown.