This release improves shrink quality by allowing Hypothesis to
automatically learn new shrink passes for difficult to shrink tests.
The automatic learning is not currently accessible in user code (it
still needs significant work on robustness and performance before it
is ready for that), but this release includes learned passes that
should improve shrinking quality for tests which use any of the "text
()",:func:~hypothesis.strategies.floats,:func:~hypothesis.strategi
es.datetimes,,:func:~hypothesis.strategies.emails, and
"complex_numbers()" strategies.
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