Qrcode

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* Revert some terminal changes from 5.2 that broke Python 3's real life tty
code generation and introduce a better way from Jacob Welsh.

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* Small fix to terminal output in Python 3 (and fix tests)

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* Add ``--error-correction`` option to qr script.

* Fix script piping to stdout in Python 3 and reading non-UTF-8 characters in
Python 3.

* Fix script piping in Windows.

* Add some useful behind-the-curtain methods for tinkerers.

* Fix terminal output when using Python 2.6

* Fix terminal output to display correctly on MS command line.

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* Make ``qr`` script work in Windows. Thanks Ionel Cristian Mărieș

* Fixed print_ascii function in Python 3.

* Out-of-bounds code version numbers are handled more consistently with a
ValueError.

* Much better test coverage (now only officially supporting Python 2.6+)

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* Update version numbers correctly.

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* Speed optimizations.

* Change the output when using the ``qr`` script to use ASCII rather than
just colors, better using the terminal real estate.

* Fix a bug in passing bytecode data directly when in Python 3.

* Substation speed optimizations to best-fit algorithm (thanks Jacob Welsh!).

* Introduce a ``print_ascii`` method and use it as the default for the ``qr``
script rather than ``print_tty``.