Popup Player for Spotify™ per Joue

This extension adds a toolbar popup to your browser window to control Spotify's web player without the need to switch tabs. The idea is to ease the player's access while doing other stuff. Usually finding the actual player among many open tabs is distracting. The popup has the following functions:

1. Play and pause
2. Move to the previous or next track
3. Change volume
4. Seek the progress bar
5. Get track and artists information

Notes:
1. For this extension to operate you need to have at least one open Spotify player
2. For the extension to operate after installation, open a new Spotify tab and start a track from the web page then use the extension popup to control the player.