v0.3.1

Release Summary

• Remove outer "subQueue" entity in the message response since it duplicates the "subQueue" property in the message.
• Add Swagger doc model descriptions and docs.
• Upgrade spring version and all dependencies to the latest.

What's Changed

• Add descriptive model annotations by @Kilemonn in #27
• Upgrade depdencies reduce vulnerabilities by @Kilemonn in #28

Full Changelog: 0.3.0...0.3.1