Pycodestyle

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* Fix regression with continuation line checker. (Issue 98)

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* Revert to the previous behaviour for ``--show-pep8``:
do not imply ``--first``. (Issue 89)

* Add E902 for IO errors. (Issue 87)

* Fix false positive for E121, and missed E124. (Issue 92)

* Set a sensible default path for config file on Windows. (Issue 95)

* Allow ``verbose`` in the configuration file. (Issue 91)

* Show the enforced ``max-line-length`` in the error message. (Issue 86)

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* Explain which configuration options are expected. Accept and recommend
the options names with hyphen instead of underscore. (Issue 82)

* Do not read the user configuration when used as a module
(except if ``config_file=True`` is passed to the ``StyleGuide`` constructor).

* Fix wrong or missing cases for the E12 series.

* Fix cases where E122 was missed. (Issue 81)

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.. warning::
The internal API is backwards incompatible.

* Remove global configuration and refactor the library around
a ``StyleGuide`` class; add the ability to configure various
reporters. (Issue 35 and 66)

* Read user configuration from ``~/.config/pep8``
and local configuration from ``./.pep8``. (Issue 22)

* Fix E502 for backslash embedded in multi-line string. (Issue 68)

* Fix E225 for Python 3 iterable unpacking (PEP 3132). (Issue 72)

* Enable the new checkers from the E12 series in the default
configuration.

* Suggest less error-prone alternatives for E712 errors.

* Rewrite checkers to run faster (E22, E251, E27).

* Fixed a crash when parsed code is invalid (too many
closing brackets).

* Fix E127 and E128 for continuation line indentation. (Issue 74)

* New option ``--format`` to customize the error format. (Issue 23)

* New option ``--diff`` to check only modified code. The unified
diff is read from STDIN. Example: ``hg diff | pep8 --diff``
(Issue 39)

* Correctly report the count of failures and set the exit code to 1
when the ``--doctest`` or the ``--testsuite`` fails.

* Correctly detect the encoding in Python 3. (Issue 69)

* Drop support for Python 2.3, 2.4 and 3.0. (Issue 78)

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* Add E121 through E128 for continuation line indentation. These
checks are disabled by default. If you want to force all checks,
use switch ``--select=E,W``. Patch by Sam Vilain. (Issue 64)

* Add E721 for direct type comparisons. (Issue 47)

* Add E711 and E712 for comparisons to singletons. (Issue 46)

* Fix spurious E225 and E701 for function annotations. (Issue 29)

* Add E502 for explicit line join between brackets.

* Fix E901 when printing source with ``--show-source``.

* Report all errors for each checker, instead of reporting only the
first occurrence for each line.

* Option ``--show-pep8`` implies ``--first``.

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* Add E901 for syntax errors. (Issues 63 and 30)

* Add E271, E272, E273 and E274 for extraneous whitespace around
keywords. (Issue 57)

* Add ``tox.ini`` configuration file for tests. (Issue 61)

* Add ``.travis.yml`` configuration file for continuous integration.
(Issue 62)