Update hypothesis to 4.14.0

[pyup-bot]

This PR updates hypothesis from 4.4.3 to 4.14.0.

The bot wasn't able to find a changelog for this release. Got an idea?

Links

• PyPI: https://pypi.org/project/hypothesis
• Repo: https://github.com/HypothesisWorks/hypothesis/tree/master/hypothesis-python

[codecov]

Codecov Report

Merging #447 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #447   +/-   ##
=======================================
  Coverage   98.57%   98.57%           
=======================================
  Files           8        8           
  Lines         702      702           
  Branches      125      125           
=======================================
  Hits          692      692           
  Misses          2        2           
  Partials        8        8

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