[python] Change to PEP 7 style.
[python] Add classes QRCode (not implemented) and QRCodeError.
[python] Change to return byte array for binary image formats.
[python] Support for Python 3.
[python] Simplify.
[libqr] Add function qr[s]IsFinalized() and qr[s]HasData().
[python] Implement qr.QRCode.copy.
[python] More Pythonic internal function name.
[python] Implement qr.QRCode.finalize(),
qr.QRCode.is_finalized() and qr.qrCode.has_data().
[python] Delete METH_CLASS flag.
[libqr] Add function pointer 'qrGetCurrentFunctionName'.
[python] Add PyQR_ActiveFuncName().
[libqr] Change error format.
[python] Implement QRCode class methods.
[python] Simplify.
[python] Change.
[libqr] Change ASCII output format.
[python] Change.