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This release adds a new mechanism to infer strategies for classes
defined using :pypi:`attrs`, based on the the type, converter, or
validator of each attribute. This inference is now built in to
:func:`~hypothesis.strategies.builds` and :func:`~hypothesis.strategies.from_type`.
On Python 2, :func:`~hypothesis.strategies.from_type` no longer generates
instances of ``int`` when passed ``long``, or vice-versa.