Expan

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`Full
Changelog <https://github.com/zalando/expan/compare/v1.2.6...v1.3.1>`__

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`Full
Changelog <https://github.com/zalando/expan/compare/v1.2.5...v1.2.6>`__

**Merged pull requests:**

- Ensure that outlier detection works if there is NaN in the data
`225 <https://github.com/zalando/expan/pull/225>`__
(`aaron-mcdaid-zalando <https://github.com/aaron-mcdaid-zalando>`__)
- More powerful derived kpis
`222 <https://github.com/zalando/expan/pull/222>`__
(`aaron-mcdaid-zalando <https://github.com/aaron-mcdaid-zalando>`__)

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`Full
Changelog <https://github.com/zalando/expan/compare/v1.2.4...v1.2.5>`__

**Merged pull requests:**

- Counting bugfix and save memory
`224 <https://github.com/zalando/expan/pull/224>`__
(`aaron-mcdaid-zalando <https://github.com/aaron-mcdaid-zalando>`__)
- Fix for the possibility that both variances are zero
`221 <https://github.com/zalando/expan/pull/221>`__
(`aaron-mcdaid-zalando <https://github.com/aaron-mcdaid-zalando>`__)

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`Full
Changelog <https://github.com/zalando/expan/compare/v1.2.3...v1.2.4>`__

**Merged pull requests:**

- Remove null analysis results from the analysis results files
`219 <https://github.com/zalando/expan/pull/219>`__
(`daryadedik <https://github.com/daryadedik>`__)

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`Full
Changelog <https://github.com/zalando/expan/compare/v1.2.2...v1.2.3>`__

**Merged pull requests:**

- Removed deep copy of the data in statistical test construction
`218 <https://github.com/zalando/expan/pull/218>`__
(`daryadedik <https://github.com/daryadedik>`__)

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`Full
Changelog <https://github.com/zalando/expan/compare/v1.2.1...v1.2.2>`__

**Merged pull requests:**

- Fixing bugs and adding more logging
`217 <https://github.com/zalando/expan/pull/217>`__
(`daryadedik <https://github.com/daryadedik>`__)