v0.3.0

Stable ✅

Added new resources for SageMaker Studio

• New resource Domain
• New resource UserProfile
• New resource App

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• release artifacts for release v0.3.0 (#133) - @akartsky
• Create create-release.yml - @vijtrip2
• Integration test for studio (#131) - @akartsky
• App resource (#129) - @akartsky
• UserProfile resource (#128) - @akartsky
• Domain resource (#127) - @akartsky