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Changes:
* Distribute a universal wheel file.
Bug fixes:
* Report correct line number for E303 with comments. (Issue 60)
* Do not allow newline after parameter equal. (Issue 252)
* Fix line number reported for multi-line strings. (Issue 220)
* Fix false positive E121/E126 with multi-line strings. (Issue 265)
* Fix E501 not detected in comments with Python 2.5.
* Fix caret position with ``--show-source`` when line contains tabs.