Graham Stewart

If you're creating the Geopackage with ogr2ogr adding "-dim 2" as an option will create XY instead of XYZ WKB objects which JTS (or GEOS) can apparently read.

Same here. The demo shows correct proportions when it calls `widget.show()`, but adding the same widget through `QMainWindow::setCentralWidget` and then calling `mainwindow.show()` over-stretches the cow horizontally on my system (Qt5...

See #42