Update to version v0.9.3.1
Merge branch 'release/v0.9.3.1' into develop
Update to version v0.9.3.2
Merge branch 'release/v0.9.3.2' into develop
Fix missing requirement for Flask-HTTPAuth (fixes #72)
Update to version v0.9.4
Merge branch 'release/v0.9.4' into develop