SVG export not possible with closed paths

[paulmueller]

This will be fixed after pyqtgraph/pyqtgraph#3495 has been clarified.

Note to myself: Update the test case in test_gui_export_plot.py

[paulmueller]

Fixed in pyqtgraph with pyqtgraph/pyqtgraph#3458 (not merged yet).

[paulmueller]

If you are running DCscope from source, you can do pip install git+https://github.com/pyqtgraph/pyqtgraph.git@4683d7a2d3f2b0a8412618a41dc780bd9cce339b.

I added this to the build pipeline for now.

[paulmueller]

The approach in my previous post causes issues with pyinstaller. I created a custom repository/branch with minimal changes to pyqtgraph 0.14.0:

https://github.com/paulmueller/pyqtgraph/tree/0-14-0-svg-edit

pip install git+https://github.com/paulmueller/pyqtgraph.git@907c5b0fd65f6b6da684f7a814349e5643ac3fc8