Draft: Extensions to the SVG analyzer, test case and partial fix for #372
requested to merge magjac/graphviz:fix-Failure-of-arrowhead-and-arrowtail-to-respect-penwidth into main
NOTE: This MR is not meant to be reviewed! It's provided as a reference for !2701 (merged) if someone want's to look at, or run, the test case for the fixes of #372 (closed).
I will clean up the code and squash commits before submitting something for review. This MR will probably also be broken up into several reviewable of MRs. Probably at least MRs for:
- Extending the C++ API with a few needed functions.
- Extending the SVG Analyzer to be able analyze and recreate SVG for simple graphs exactly.
- Adding a test case for #372 (closed).