v0.9.0b6

What's Changed

• Display objective forms even for completed trials by @c-bata in #387
• Remove redundant json dumps by @c-bata in #390
• Sort studies by study_id by @c-bata in #391
• Fix bug of setStateValues by @c-bata in #392
• Add an initial Audio support by @c-bata in #395
• Keep backward compatibility of widget definition by @c-bata in #393
• Introduce --storage-class CLi argument to support journal storage by @c-bata in #394
• Bump the version up to v0.9.0b6 by @c-bata in #396

Full Changelog: v0.9.0b5...v0.9.0b6