Merge branch 'release/0.5.4'
Merge branch 'release/0.5.5'
Merge branch 'release/0.5.6'
Merge branch 'release/0.5.7'
Fixed issue where searching would break in some locales
Bumped version to 0.5.8
Updated spotify.py to v0.8.4 (fixes authentication issue)
Merge branch 'hotfix/0.5.8' into develop