v0.3.1

What's Changed

• feat: Researcher Metadata & Knowledge Areas by @paulossjunior in #10
• fix(domain): implement SerializableMixin and verify persistence by @paulossjunior in #12
• release: v0.1.1 (from Developing) by @paulossjunior in #11

Full Changelog: v0.3.0...v0.3.1