Update requests to 2.23.0

[pyup-bot]

This PR updates requests from 2.10.0 to 2.23.0.

Changelog

2.23.0

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

**Improvements**

- Remove defunct reference to `prefetch` in Session `__attrs__` (5110)

**Bugfixes**

- Requests no longer outputs password in basic auth usage warning. (5099)

**Dependencies**

- Pinning for `chardet` and `idna` now uses major version instead of minor.
This hopefully reduces the need for releases everytime a dependency is updated.

2.22.0

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

**Dependencies**

- Requests now supports urllib3 v1.25.2.
(note: 1.25.0 and 1.25.1 are incompatible)

**Deprecations**

- Requests has officially stopped support for Python 3.4.

2.21.0

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

**Dependencies**

- Requests now supports idna v2.8.

2.20.1

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

**Bugfixes**

- Fixed bug with unintended Authorization header stripping for
redirects using default ports (http/80, https/443).

2.20.0

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

**Bugfixes**

-   Content-Type header parsing is now case-insensitive (e.g.
 charset=utf8 v Charset=utf8).
-   Fixed exception leak where certain redirect urls would raise
 uncaught urllib3 exceptions.
-   Requests removes Authorization header from requests redirected
 from https to http on the same hostname. (CVE-2018-18074)
-   `should_bypass_proxies` now handles URIs without hostnames (e.g.
 files).

**Dependencies**

- Requests now supports urllib3 v1.24.

**Deprecations**

- Requests has officially stopped support for Python 2.6.

2.19.1

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

**Bugfixes**

-   Fixed issue where status\_codes.py's `init` function failed trying
 to append to a `__doc__` value of `None`.

2.19.0

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

**Improvements**

-   Warn user about possible slowdown when using cryptography version
 < 1.3.4
-   Check for invalid host in proxy URL, before forwarding request to
 adapter.
-   Fragments are now properly maintained across redirects. (RFC7231
 7.1.2)
-   Removed use of cgi module to expedite library load time.
-   Added support for SHA-256 and SHA-512 digest auth algorithms.
-   Minor performance improvement to `Request.content`.
-   Migrate to using collections.abc for 3.7 compatibility.

**Bugfixes**

-   Parsing empty `Link` headers with `parse_header_links()` no longer
 return one bogus entry.
-   Fixed issue where loading the default certificate bundle from a zip
 archive would raise an `IOError`.
-   Fixed issue with unexpected `ImportError` on windows system which do
 not support `winreg` module.
-   DNS resolution in proxy bypass no longer includes the username and
 password in the request. This also fixes the issue of DNS queries
 failing on macOS.
-   Properly normalize adapter prefixes for url comparison.
-   Passing `None` as a file pointer to the `files` param no longer
 raises an exception.
-   Calling `copy` on a `RequestsCookieJar` will now preserve the cookie
 policy correctly.

**Dependencies**

-   We now support idna v2.7.
-   We now support urllib3 v1.23.

2.18.4

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

**Improvements**

-   Error messages for invalid headers now include the header name for
 easier debugging

**Dependencies**

-   We now support idna v2.6.

2.18.3

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

**Improvements**

-   Running `$ python -m requests.help` now includes the installed
 version of idna.

**Bugfixes**

-   Fixed issue where Requests would raise `ConnectionError` instead of
 `SSLError` when encountering SSL problems when using urllib3 v1.22.

2.18.2

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

**Bugfixes**

-   `requests.help` no longer fails on Python 2.6 due to the absence of
 `ssl.OPENSSL_VERSION_NUMBER`.

**Dependencies**

-   We now support urllib3 v1.22.

2.18.1

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

**Bugfixes**

-   Fix an error in the packaging whereby the `*.whl` contained
 incorrect data that regressed the fix in v2.17.3.

2.18.0

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

**Improvements**

-   `Response` is now a context manager, so can be used directly in a
 `with` statement without first having to be wrapped by
 `contextlib.closing()`.

**Bugfixes**

-   Resolve installation failure if multiprocessing is not available
-   Resolve tests crash if multiprocessing is not able to determine the
 number of CPU cores
-   Resolve error swallowing in utils set\_environ generator

2.17.3

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

**Improvements**

-   Improved `packages` namespace identity support, for monkeypatching
 libraries.

2.17.2

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

**Improvements**

-   Improved `packages` namespace identity support, for monkeypatching
 libraries.

2.17.1

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

**Improvements**

-   Improved `packages` namespace identity support, for monkeypatching
 libraries.

2.17.0

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

**Improvements**

-   Removal of the 301 redirect cache. This improves thread-safety.

2.16.5

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

-   Improvements to `$ python -m requests.help`.

2.16.4

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

-   Introduction of the `$ python -m requests.help` command, for
 debugging with maintainers!

2.16.3

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

-   Further restored the `requests.packages` namespace for compatibility
 reasons.

2.16.2

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

-   Further restored the `requests.packages` namespace for compatibility
 reasons.

No code modification (noted below) should be necessary any longer.

2.16.1

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

-   Restored the `requests.packages` namespace for compatibility
 reasons.
-   Bugfix for `urllib3` version parsing.

**Note**: code that was written to import against the
`requests.packages` namespace previously will have to import code that
rests at this module-level now.

For example:

 from requests.packages.urllib3.poolmanager import PoolManager

Will need to be re-written to be:

 from requests.packages import urllib3
 urllib3.poolmanager.PoolManager

Or, even better:

 from urllib3.poolmanager import PoolManager

2.16.0

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

-   Unvendor ALL the things!

2.15.1

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

-   Everyone makes mistakes.

2.15.0

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

**Improvements**

-   Introduction of the `Response.next` property, for getting the next
 `PreparedResponse` from a redirect chain (when
 `allow_redirects=False`).
-   Internal refactoring of `__version__` module.

**Bugfixes**

-   Restored once-optional parameter for
 `requests.utils.get_environ_proxies()`.

2.14.2

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

**Bugfixes**

-   Changed a less-than to an equal-to and an or in the dependency
 markers to widen compatibility with older setuptools releases.

2.14.1

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

**Bugfixes**

-   Changed the dependency markers to widen compatibility with older pip
 releases.

2.14.0

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

**Improvements**

-   It is now possible to pass `no_proxy` as a key to the `proxies`
 dictionary to provide handling similar to the `NO_PROXY` environment
 variable.
-   When users provide invalid paths to certificate bundle files or
 directories Requests now raises `IOError`, rather than failing at
 the time of the HTTPS request with a fairly inscrutable certificate
 validation error.
-   The behavior of `SessionRedirectMixin` was slightly altered.
 `resolve_redirects` will now detect a redirect by calling
 `get_redirect_target(response)` instead of directly querying
 `Response.is_redirect` and `Response.headers['location']`. Advanced
 users will be able to process malformed redirects more easily.
-   Changed the internal calculation of elapsed request time to have
 higher resolution on Windows.
-   Added `win_inet_pton` as conditional dependency for the `[socks]`
 extra on Windows with Python 2.7.
-   Changed the proxy bypass implementation on Windows: the proxy bypass
 check doesn't use forward and reverse DNS requests anymore
-   URLs with schemes that begin with `http` but are not `http` or
 `https` no longer have their host parts forced to lowercase.

**Bugfixes**

-   Much improved handling of non-ASCII `Location` header values in
 redirects. Fewer `UnicodeDecodeErrors` are encountered on Python 2,
 and Python 3 now correctly understands that Latin-1 is unlikely to
 be the correct encoding.
-   If an attempt to `seek` file to find out its length fails, we now
 appropriately handle that by aborting our content-length
 calculations.
-   Restricted `HTTPDigestAuth` to only respond to auth challenges made
 on 4XX responses, rather than to all auth challenges.
-   Fixed some code that was firing `DeprecationWarning` on Python 3.6.
-   The dismayed person emoticon (`/o\\`) no longer has a big head. I'm
 sure this is what you were all worrying about most.

**Miscellaneous**

-   Updated bundled urllib3 to v1.21.1.
-   Updated bundled chardet to v3.0.2.
-   Updated bundled idna to v2.5.
-   Updated bundled certifi to 2017.4.17.

2.13.0

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

**Features**

-   Only load the `idna` library when we've determined we need it. This
 will save some memory for users.

**Miscellaneous**

-   Updated bundled urllib3 to 1.20.
-   Updated bundled idna to 2.2.

2.12.5

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

**Bugfixes**

-   Fixed an issue with JSON encoding detection, specifically detecting
 big-endian UTF-32 with BOM.

2.12.4

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

**Bugfixes**

-   Fixed regression from 2.12.2 where non-string types were rejected in
 the basic auth parameters. While support for this behaviour has been
 readded, the behaviour is deprecated and will be removed in the
 future.

2.12.3

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

**Bugfixes**

-   Fixed regression from v2.12.1 for URLs with schemes that begin with
 "http". These URLs have historically been processed as though they
 were HTTP-schemed URLs, and so have had parameters added. This was
 removed in v2.12.2 in an overzealous attempt to resolve problems
 with IDNA-encoding those URLs. This change was reverted: the other
 fixes for IDNA-encoding have been judged to be sufficient to return
 to the behaviour Requests had before v2.12.0.

2.12.2

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

**Bugfixes**

-   Fixed several issues with IDNA-encoding URLs that are technically
 invalid but which are widely accepted. Requests will now attempt to
 IDNA-encode a URL if it can but, if it fails, and the host contains
 only ASCII characters, it will be passed through optimistically.
 This will allow users to opt-in to using IDNA2003 themselves if they
 want to, and will also allow technically invalid but still common
 hostnames.
-   Fixed an issue where URLs with leading whitespace would raise
 `InvalidSchema` errors.
-   Fixed an issue where some URLs without the HTTP or HTTPS schemes
 would still have HTTP URL preparation applied to them.
-   Fixed an issue where Unicode strings could not be used in basic
 auth.
-   Fixed an issue encountered by some Requests plugins where
 constructing a Response object would cause `Response.content` to
 raise an `AttributeError`.

2.12.1

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

**Bugfixes**

-   Updated setuptools 'security' extra for the new PyOpenSSL backend in
 urllib3.

**Miscellaneous**

-   Updated bundled urllib3 to 1.19.1.

2.12.0

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

**Improvements**

-   Updated support for internationalized domain names from IDNA2003 to
 IDNA2008. This updated support is required for several forms of IDNs
 and is mandatory for .de domains.
-   Much improved heuristics for guessing content lengths: Requests will
 no longer read an entire `StringIO` into memory.
-   Much improved logic for recalculating `Content-Length` headers for
 `PreparedRequest` objects.
-   Improved tolerance for file-like objects that have no `tell` method
 but do have a `seek` method.
-   Anything that is a subclass of `Mapping` is now treated like a
 dictionary by the `data=` keyword argument.
-   Requests now tolerates empty passwords in proxy credentials, rather
 than stripping the credentials.
-   If a request is made with a file-like object as the body and that
 request is redirected with a 307 or 308 status code, Requests will
 now attempt to rewind the body object so it can be replayed.

**Bugfixes**

-   When calling `response.close`, the call to `close` will be
 propagated through to non-urllib3 backends.
-   Fixed issue where the `ALL_PROXY` environment variable would be
 preferred over scheme-specific variables like `HTTP_PROXY`.
-   Fixed issue where non-UTF8 reason phrases got severely mangled by
 falling back to decoding using ISO 8859-1 instead.
-   Fixed a bug where Requests would not correctly correlate cookies set
 when using custom Host headers if those Host headers did not use the
 native string type for the platform.

**Miscellaneous**

-   Updated bundled urllib3 to 1.19.
-   Updated bundled certifi certs to 2016.09.26.

2.11.1

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

**Bugfixes**

-   Fixed a bug when using `iter_content` with `decode_unicode=True` for
 streamed bodies would raise `AttributeError`. This bug was
 introduced in 2.11.
-   Strip Content-Type and Transfer-Encoding headers from the header
 block when following a redirect that transforms the verb from
 POST/PUT to GET.

2.11.0

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

**Improvements**

-   Added support for the `ALL_PROXY` environment variable.
-   Reject header values that contain leading whitespace or newline
 characters to reduce risk of header smuggling.

**Bugfixes**

-   Fixed occasional `TypeError` when attempting to decode a JSON
 response that occurred in an error case. Now correctly returns a
 `ValueError`.
-   Requests would incorrectly ignore a non-CIDR IP address in the
 `NO_PROXY` environment variables: Requests now treats it as a
 specific IP.
-   Fixed a bug when sending JSON data that could cause us to encounter
 obscure OpenSSL errors in certain network conditions (yes, really).
-   Added type checks to ensure that `iter_content` only accepts
 integers and `None` for chunk sizes.
-   Fixed issue where responses whose body had not been fully consumed
 would have the underlying connection closed but not returned to the
 connection pool, which could cause Requests to hang in situations
 where the `HTTPAdapter` had been configured to use a blocking
 connection pool.

**Miscellaneous**

-   Updated bundled urllib3 to 1.16.
-   Some previous releases accidentally accepted non-strings as
 acceptable header values. This release does not.

Links

• PyPI: https://pypi.org/project/requests
• Changelog: https://pyup.io/changelogs/requests/
• Docs: https://requests.readthedocs.io