Firefox may not be the user's default browser

The feature to open a browser and let the user edit the changes in the release is welcome, but it must work accross different systems and browsers. Requiring the user to have firefox installed (and setup) so the link works is not a good option. My default browser is Chromium and the script does not continue until I log in to the system and exit the browser. It better to output a line saying the user to go to a specific URL and do it.