Update more-itertools to 8.0.0

[pyup-bot]

This PR updates more-itertools from 7.0.0 to 8.0.0.

Changelog

8.0.0

See [the release notes](https://github.com/erikrose/more-itertools/blob/4661c942c49fe891a80b50c201983d00db75af13/docs/versions.rst800) for details.

7.2.0

See the [release notes](https://github.com/erikrose/more-itertools/blob/0f4a66cdce0e153594eb95beb292fd5ea4393473/docs/versions.rst) for details.

7.1.0

See [the release notes](https://github.com/erikrose/more-itertools/blob/4152860cbbd7a073253d075472c1eb3b73e38a6a/docs/versions.rst710) for details.

Links

• PyPI: https://pypi.org/project/more-itertools
• Changelog: https://pyup.io/changelogs/more-itertools/
• Repo: https://github.com/erikrose/more-itertools
• Docs: https://pythonhosted.org/more-itertools/

[codecov-io]

Codecov Report

❗ No coverage uploaded for pull request base (master@9648034). Click here to learn what that means.
The diff coverage is n/a.

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  Hits              ?    116           
  Misses            ?      0           
  Partials          ?      0

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[pyup-bot]

Closing this in favor of #201