Bump hypothesis-python version to 3.86.0 and update changelog

[skip ci]

Author: DRMacIver

hypothesis-python/RELEASE.rst

@@ -21,6 +21,22 @@ Hypothesis APIs come in three flavours:
 You should generally assume that an API is internal unless you have specific
 information to the contrary.
 
+.. _v3.86.0:
+
+-------------------
+3.86.0 - 2019-01-03
+-------------------
+
+This release ensures that infinite numbers are never generated by
+:func:`~hypothesis.strategies.floats` with ``allow_infinity=False``,
+which could previously happen in some cases where one bound was also
+provided.
+
+The trivially inconsistent ``min_value=inf, allow_infinity=False`` now
+raises an InvalidArgumentError, as does the inverse with ``max_value``.
+You can still use :func:`just(inf) <hypothesis.strategies.just>` to
+generate ``inf`` without violating other constraints.
+
 .. _v3.85.3:
 
 -------------------

hypothesis-python/docs/changes.rst

@@ -17,5 +17,5 @@
 
 from __future__ import absolute_import, division, print_function
 
-__version_info__ = (3, 85, 3)
+__version_info__ = (3, 86, 0)
 __version__ = ".".join(map(str, __version_info__))