Merge #167

167: Scheduled weekly dependency update for week 00 r=mithrandi a=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.
<table align="center">

<tr>
<td><b>asn1crypto</b></td>
<td align="center">0.23.0</td>
<td align="center">&raquo;</td>
<td align="center">0.24.0</td>
<td>
     <a href="https://pypi.python.org/pypi/asn1crypto">PyPI</a> | <a href="https://pyup.io/changelogs/asn1crypto/">Changelog</a> | <a href="https://github.com/wbond/asn1crypto/issues">Repo</a> 

</td>

<tr>
<td><b>attrs</b></td>
<td align="center">17.3.0</td>
<td align="center">&raquo;</td>
<td align="center">17.4.0</td>
<td>
     <a href="https://pypi.python.org/pypi/attrs">PyPI</a> | <a href="https://pyup.io/changelogs/attrs/">Changelog</a> | <a href="http://www.attrs.org/">Homepage</a> 

</td>

<tr>
<td><b>ipaddress</b></td>
<td align="center">1.0.18</td>
<td align="center">&raquo;</td>
<td align="center">1.0.19</td>
<td>
     <a href="https://pypi.python.org/pypi/ipaddress">PyPI</a> | <a href="https://github.com/phihag/ipaddress">Repo</a> 

</td>

<tr>
<td><b>txaws</b></td>
<td align="center">0.4.0</td>
<td align="center">&raquo;</td>
<td align="center">0.5.0</td>
<td>
     <a href="https://pypi.python.org/pypi/txaws">PyPI</a> | <a href="https://pyup.io/changelogs/txaws/">Changelog</a> | <a href="https://github.com/twisted/txaws">Repo</a> 

</td>

</tr>
</table>



## Changelogs


### asn1crypto 0.23.0 -> 0.24.0

>### 0.24.0


> - `x509.Certificate().self_signed` will no longer return `&quot;yes&quot;` under any
>   circumstances. This helps prevent confusion since the library does not
>   verify the signature. Instead a library like oscrypto should be used
>   to confirm if a certificate is self-signed.
> - Added various OIDs to `x509.KeyPurposeId()`
> - Added `x509.Certificate().private_key_usage_period_value`
> - Added structures for parsing common subject directory attributes for
>   X.509 certificates, including `x509.SubjectDirectoryAttribute()`
> - Added `algos.AnyAlgorithmIdentifier()` for situations where an
>   algorithm identifier may contain a digest, signed digest or encryption
>   algorithm OID
> - Fixed a bug with `x509.Certificate().subject_directory_attributes_value`
>   not returning the correct value
> - Fixed a bug where explicitly-tagged fields in a `core.Sequence()` would
>   not function properly when the field had a default value
> - Fixed a bug with type checking in `pem.armor()`







### attrs 17.3.0 -> 17.4.0

>### 17.4.0

>-------------------

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

>- The traversal of MROs when using multiple inheritance was backward:
>  If you defined a class ``C`` that subclasses ``A`` and ``B`` like ``C(A, B)``, ``attrs`` would have collected the attributes from ``B`` *before* those of ``A``.

>  This is now fixed and means that in classes that employ multiple inheritance, the output of ``__repr__`` and the order of positional arguments in ``__init__`` changes.
>  Due to the nature of this bug, a proper deprecation cycle was unfortunately impossible.

>  Generally speaking, it&#39;s advisable to prefer ``kwargs``-based initialization anyways – *especially* if you employ multiple inheritance and diamond-shaped hierarchies.

>  `298 &lt;https://github.com/python-attrs/attrs/issues/298&gt;`_,
>  `299 &lt;https://github.com/python-attrs/attrs/issues/299&gt;`_,
>  `304 &lt;https://github.com/python-attrs/attrs/issues/304&gt;`_
>- The ``__repr__`` set by ``attrs``
>  no longer produces an ``AttributeError``
>  when the instance is missing some of the specified attributes
>  (either through deleting
>  or after using ``init=False`` on some attributes).

>  This can break code
>  that relied on ``repr(attr_cls_instance)`` raising ``AttributeError``
>  to check if any attr-specified members were unset.

>  If you were using this,
>  you can implement a custom method for checking this::

>      def has_unset_members(self):
>          for field in attr.fields(type(self)):
>              try:
>                  getattr(self, field.name)
>              except AttributeError:
>                  return True
>          return False

>  `308 &lt;https://github.com/python-attrs/attrs/issues/308&gt;`_


>Deprecations
>^^^^^^^^^^^^

>- The ``attr.ib(convert=callable)`` option is now deprecated in favor of ``attr.ib(converter=callable)``.

>  This is done to achieve consistency with other noun-based arguments like *validator*.

>  *convert* will keep working until at least January 2019 while raising a ``DeprecationWarning``.

>  `307 &lt;https://github.com/python-attrs/attrs/issues/307&gt;`_


>Changes
>^^^^^^^

>- Generated ``__hash__`` methods now hash the class type along with the attribute values.
>  Until now the hashes of two classes with the same values were identical which was a bug.

>  The generated method is also *much* faster now.

>  `261 &lt;https://github.com/python-attrs/attrs/issues/261&gt;`_,
>  `295 &lt;https://github.com/python-attrs/attrs/issues/295&gt;`_,
>  `296 &lt;https://github.com/python-attrs/attrs/issues/296&gt;`_
>- ``attr.ib``\ ’s ``metadata`` argument now defaults to a unique empty ``dict`` instance instead of sharing a common empty ``dict`` for all.
>  The singleton empty ``dict`` is still enforced.

>  `280 &lt;https://github.com/python-attrs/attrs/issues/280&gt;`_
>- ``ctypes`` is optional now however if it&#39;s missing, a bare ``super()`` will not work in slots classes.
>  This should only happen in special environments like Google App Engine.

>  `284 &lt;https://github.com/python-attrs/attrs/issues/284&gt;`_,
>  `286 &lt;https://github.com/python-attrs/attrs/issues/286&gt;`_
>- The attribute redefinition feature introduced in 17.3.0 now takes into account if an attribute is redefined via multiple inheritance.
>  In that case, the definition that is closer to the base of the class hierarchy wins.

>  `285 &lt;https://github.com/python-attrs/attrs/issues/285&gt;`_,
>  `287 &lt;https://github.com/python-attrs/attrs/issues/287&gt;`_
>- Subclasses of ``auto_attribs=True`` can be empty now.

>  `291 &lt;https://github.com/python-attrs/attrs/issues/291&gt;`_,
>  `292 &lt;https://github.com/python-attrs/attrs/issues/292&gt;`_
>- Equality tests are *much* faster now.

>  `306 &lt;https://github.com/python-attrs/attrs/issues/306&gt;`_
>- All generated methods now have correct ``__module__``, ``__name__``, and (on Python 3) ``__qualname__`` attributes.

>  `309 &lt;https://github.com/python-attrs/attrs/issues/309&gt;`_


>----











That's it for now!

Happy merging! 🤖

requirements.txt

@@ -5,8 +5,8 @@
 #    pip-compile --no-annotate --output-file requirements.txt requirements.in
 #
 appdirs==1.4.3
-asn1crypto==0.23.0
-attrs==17.3.0
+asn1crypto==0.24.0
+attrs==17.4.0
 automat==0.6.0
 axiom==0.7.5
 cffi==1.11.2; platform_python_implementation != 'PyPy'
@@ -18,7 +18,7 @@ epsilon==0.7.1
 hyperlink==17.3.1
 idna==2.6
 incremental==17.5.0
-ipaddress==1.0.18
+ipaddress==1.0.19
 lxml==4.1.1
 mantissa==0.9.0
 nevow==0.14.3
@@ -34,7 +34,7 @@ pytz==2017.3
 service-identity==17.0.0
 six==1.11.0
 twisted[conch,tls]==17.9.0
-txaws==0.4.0
+txaws==0.5.0
 venusian==1.1.0
 vertex==0.3.1
 zope.interface==4.4.3