New arrow implementation, proof of concept.

Hi Matplotlib devs

I'm happily using this software. Have just always found your arrow
implementation a bit strange, as it assumes equal axis.

Here is a new, simple first draft of an arrow implementation, that does not
assume equal axis. Feel free to use any of the code under your preferred
license. Or comment, and I will keep working on it.

An example is included in the file.

Best Regards
Troels Kofoed Jacobsen (2.15 KB)