* Ability to download opus audio and encoding to AAC
Requires ffmpeg with libfdk_aac and mutagen.
* Change to oauth2 to get access token
* Add import spotipy.oauth2
* Final polish before merge
* made code a little cleaner
* switched to requests from mechanize
* fixed sys.path error
* place list.txt with spotdl.py and not in Music/list.txt
* change a sub-heading to 'Instructions for Downloading Songs'
* remove mechanize
* change error message
* remove random comments
* no extra print
* remove random dots