Support matplotlib >= 3.6.0

[riley-brady]

Currently the latest proplot version only supports matplotlib<=3.4.3. Given that matplotlib is up to 3.8.3 and the latest xarray versions require higher versions, we should push to support the latest matplotlib here.

It could be fruitful in the future to run a nightly test suite running the bleeding edge of this repo against the latest matplotlib version to detect this sooner.

The conda feedstock is also locked at matplotlib-base < 3.5.0 due to these issues. See PR here waiting for new proplot release: conda-forge/proplot-feedstock#28.

[riley-brady]

FYI PR is here to fix these compatibility issues: #450. Not sure if there are hidden breaks in the package since there isn't currently a test suite. But this currently doesn't break on import at least.

[Yefee]

Any progress or plans?

[riley-brady]

@Yefee , there's discussion on #450 to hack it into working for now. You can pull the latest commit from there, but might also need to implement some other changes suggested in the thread.

[cvanelteren]

See #459 (comment)

[riley-brady]

Please see #459! Until this gets merged in and released as an official version, you can install proplot via the following command to have compatibility with modern python versions and modern versions of matplotlib, cartopy, etc.

pip install git+https://github.com/proplot-dev/proplot.git@refs/pull/459/head