Scheduled weekly dependency update for week 46

[pyup-bot]

Updates

Here's a list of all the updates bundled in this pull request. I've added some links to make it easier for you to find all the information you need.

attrs	17.2.0	»	17.3.0	PyPI | Changelog | Homepage
cryptography	2.1.2	»	2.1.3	PyPI | Changelog | Repo
lxml	4.1.0	»	4.1.1	PyPI | Changelog | Homepage | Bugtracker
pytz	2017.2	»	2017.3	PyPI | Homepage | Docs

Changelogs

attrs 17.2.0 -> 17.3.0

17.3.0

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Backward-incompatible Changes
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

• Attributes are not defined on the class body anymore.

This means that if you define a class C with an attribute x, the class will not have an attribute x for introspection anymore.
Instead of C.x, use attr.fields(C).x or look at C.__attrs_attrs__.
The old behavior has been deprecated since version 16.1.
(253 <https://github.com/python-attrs/attrs/issues/253>_)

Changes
^^^^^^^

• super() and __class__ now work on Python 3 when slots=True.
  (102 <https://github.com/python-attrs/attrs/issues/102>, 226 <https://github.com/python-attrs/attrs/issues/226>, 269 <https://github.com/python-attrs/attrs/issues/269>, 270 <https://github.com/python-attrs/attrs/issues/270>, 272 <https://github.com/python-attrs/attrs/issues/272>_)
• Added type argument to attr.ib() and corresponding type attribute to attr.Attribute.

This change paves the way for automatic type checking and serialization (though as of this release attrs does not make use of it).
In Python 3.6 or higher, the value of attr.Attribute.type can alternately be set using variable type annotations
(see PEP 526 <https://www.python.org/dev/peps/pep-0526/>). (151 <https://github.com/python-attrs/attrs/issues/151>, 214 <https://github.com/python-attrs/attrs/issues/214>, 215 <https://github.com/python-attrs/attrs/issues/215>, 239 <https://github.com/python-attrs/attrs/issues/239>_)

• The combination of str=True and slots=True now works on Python 2.
  (198 <https://github.com/python-attrs/attrs/issues/198>_)
• attr.Factory is hashable again. (204 <https://github.com/python-attrs/attrs/issues/204>_)
• Subclasses now can overwrite attribute definitions of their superclass.

That means that you can -- for example -- change the default value for an attribute by redefining it.
(221 <https://github.com/python-attrs/attrs/issues/221>, 229 <https://github.com/python-attrs/attrs/issues/229>)

• Added new option auto_attribs to attr.s that allows to collect annotated fields without setting them to attr.ib().

Setting a field to an attr.ib() is still possible to supply options like validators.
Setting it to any other value is treated like it was passed as attr.ib(default=value) -- passing an instance of attr.Factory also works as expected.
(262 <https://github.com/python-attrs/attrs/issues/262>, 277 <https://github.com/python-attrs/attrs/issues/277>)

• Instances of classes created using attr.make_class() can now be pickled.
  (282 <https://github.com/python-attrs/attrs/issues/282>_)

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lxml 4.1.0 -> 4.1.1

4.1.1

==================

• Rebuild with Cython 0.27.3 to improve support for Py3.7.

That's it for now!

Happy merging! 🤖

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This change is 

[codecov]

Codecov Report

Merging #161 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #161   +/-   ##
=======================================
  Coverage   93.84%   93.84%           
=======================================
  Files          14       14           
  Lines        1072     1072           
  Branches       65       65           
=======================================
  Hits         1006     1006           
  Misses         53       53           
  Partials       13       13

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[mithrandi]

bors r+

[bors-fusion]

Build succeeded

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