download-finished-notify von Jevil7452

This is a simple extension that will notify the user whenever a download completes.
This is a modified version of this extension: https://addons.mozilla.org/en-US/firefox/addon/download-notify/
Source code: https://github.com/Jevil7452/download-notify
Original extension's source code: https://github.com/sealj553/download-notify