v0.4.0 (2017-09-20)

• Update documentation to refer to new 'Pandora Plus' subscription model instead of the old 'Pandora One'.
• Update troubleshooting guide with more workarounds for cross-signed certificates using OpenSSL < 1.0.2.
• Allow station URI's to be added to playlists and the Mopidy tracklist. (Addresses: #58).