Feature/add api to df

assigned to @maria.ernst

added 2 commits

• 8f1e2a31 - feat: add api to df helper
• 7711185a - test: api to df

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added 1 commit

• 706d9103 - build: 0.6.0-rc1

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added 2 commits

• 08df77d0 - test: api to df
• 4aad7b01 - build: 0.6.0-rc1

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added 2 commits

• d410841b - test: api to df
• 73c1efb7 - feat: pg handler

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added 2 commits

• d645a2cb - test: api to df
• e8fb7b2e - feat: pg handler

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