Pycodestyle

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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)

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* Fix inconsistent version numbers.

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* Fix W602 ``raise`` to handle multi-char names. (Issue 53)

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* Now ``--first`` prints only the first occurrence of each error.
The ``--repeat`` flag becomes obsolete because it is the default
behaviour. (Issue 6)

* Allow specifying ``--max-line-length``. (Issue 36)

* Make the shebang more flexible. (Issue 26)

* Add testsuite to the bundle. (Issue 25)

* Fixes for Jython. (Issue 49)

* Add PyPI classifiers. (Issue 43)

* Fix the ``--exclude`` option. (Issue 48)

* Fix W602, accept ``raise`` with 3 arguments. (Issue 34)

* Correctly select all tests if ``DEFAULT_IGNORE == ''``.

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* Fix inconsistent version numbers. (Issue 21)