New QR code generator.

orex1requested to merge
orex1/extensions:master into master

Dear Inkscape developers.

I would like to contribute to your excellent project. I almost rewrite the QR code generator.

The reasons are:

  1. Wrong QR code generated by previous version of the util. See (qr_new_vs_old.svg
  2. Some visual artefacts (grey borders between black rects of a QR code).

The changes are:

  1. I get the new version of the QR array generator from Kazuhiko Arase. It gives bug free QR code.
  2. Completely rewrite SVG generator to add some smart visual effects (see QRdrawtypes.svg

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