Prevents YouTube and Vimeo from pausing videos when minimizing or switching tabs. Cross-browser port of https://addons.mozilla.org/en-US/firefox/addon/video-background-play-fix/
Adds a download button to the embed Vimeo video player. This is a fork of "Vimeo Download" originally created by schwarztee (https://greasyfork.org/es/scripts/16497-vimeo-download).