Merge pull request #2 from santifinland/develop

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Merge pull request #6 from santifinland/develop

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Merge pull request #8 from santifinland/develop

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Merge pull request #10 from santifinland/develop

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Merge pull request #12 from santifinland/develop

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Merge pull request #14 from santifinland/develop

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Merge pull request #16 from santifinland/develop

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Added abstention option
Merge pull request #17 from santifinland/feature/abstention

Feature/abstention