PiP - Picture in Picture for Mac OSX and Linux

Note: This addon only works with Linux and MacOSX - it uses certain Firefox functions not yet available with Windows. As soon as the bug for Windows, in Firefox, is fixed, this should be updated to reflect Windows support. In beta development, and for now working only with Mac OSX and also Linux. It captures the video from a tab which is playing a video, and creates a Picture in Picture experience window next to the status bar.