Hypothesis

-------------------

This release fixes a problem introduced in :ref:`3.56.0 <v3.56.0>` where
setting :obj:`~hypothesis.settings.max_examples` to ``1`` would result in tests
failing with ``Unsatisfiable``. This problem could also occur in other harder
to trigger circumstances (e.g. by setting it to a low value, having a hard to
satisfy assumption, and disabling health checks).

-------------------

This release fixes a problem that was introduced in :ref:`3.56.0 <v3.56.0>`:
Use of the ``HYPOTHESIS_VERBOSITY_LEVEL`` environment variable was, rather
than deprecated, actually broken due to being read before various setup
the deprecation path needed was done. It now works correctly (and emits a
deprecation warning).

-------------------

This release deprecates several redundant or internally oriented
:class:`~hypothesis.settings`, working towards an orthogonal set of
configuration options that are widely useful *without* requiring any
knowledge of our internals (:issue:`535`).

- Deprecated settings that no longer have any effect are no longer
shown in the ``__repr__`` unless set to a non-default value.
- ``hypothesis.settings.perform_health_check`` is deprecated, as it
duplicates :obj:`~hypothesis.settings.suppress_health_check`.
- ``hypothesis.settings.max_iterations`` is deprecated and disabled,
because we can usually get better behaviour from an internal heuristic
than a user-controlled setting.
- ``hypothesis.settings.min_satisfying_examples`` is deprecated and
disabled, due to overlap with the
:obj:`~hypothesis.HealthCheck.filter_too_much` healthcheck
and poor interaction with :obj:`~hypothesis.settings.max_examples`.
- ``HYPOTHESIS_VERBOSITY_LEVEL`` is now deprecated. Set
:obj:`~hypothesis.settings.verbosity` through the profile system instead.
- Examples tried by ``find()`` are now reported at ``debug``
verbosity level (as well as ``verbose`` level).

-------------------

This release fixes a somewhat obscure condition (:issue:`1230`) under which you
could occasionally see a failing test trigger an assertion error inside
Hypothesis instead of failing normally.

-------------------

This patch fixes one possible cause of :issue:`966`. When running
Python 2 with hash randomisation, passing a :obj:`python:bytes` object
to :func:`python:random.seed` would use ``version=1``, which broke
:obj:`~hypothesis.settings.derandomize` (because the seed depended on
a randomised hash). If :obj:`~hypothesis.settings.derandomize` is
*still* nondeterministic for you, please open an issue.

-------------------

This patch makes a variety of minor improvements to the documentation,
and improves a few validation messages for invalid inputs.