Merge branch 'hotfix/identifier'
Merge branch 'release/v0.5.0'
Merge branch 'release/v0.6.0'
Fixed bug in addTracksToPlaylist.
Merge branch 'hotfix/v0.6.1'
Merge branch 'hotfix/v0.6.1' into develop
Bumping to v0.6.1
Merge branch 'hotfix/readmebump' into develop