Qrcode

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* Important fixes for incorrect matches of the alphanumeric encoding mode.
Previously, the pattern would match if a single line was alphanumeric only
(even if others wern't). Also, the two characters ``{`` and ``}`` had snuck
in as valid characters. Thanks to Eran Tromer for the report and fix.

* Optimized chunking -- if the parts of the data stream can be encoded more
efficiently, the data will be split into chunks of the most efficient modes.

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* Python 3 support.

* Add QRCode.get_matrix, an easy way to get the matrix array of a QR code
including the border. Thanks Hugh Rawlinson.

* Add in a workaround so that Python 2.6 users can use SVG generation (they
must install ``lxml``).

* Some initial tests! And tox support (``pip install tox``) for testing across
Python platforms.

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* Fix incorrect termination padding.

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* Fix the first four columns incorrectly shifted by one. Thanks to Josep
Gómez-Suay for the report and fix.

* Fix strings within 4 bits of the QR version limit being incorrectly
terminated. Thanks to zhjie231 for the report.

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* Fix installation error on Windows.

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* The PilImage wrapper is more transparent - you can use any methods or
attributes available to the underlying PIL Image instance.

* Fixed the first column of the QR Code coming up empty! Thanks to BecoKo.