Update Fiona to v1.9

[Zeitsperre]

Fiona v1.9 has API changes that necessitate changes on our end. This will render us more in line with Fiona v2.0 when it is soon released. The primary change is that Fiona features are now their own class fiona.Feature containing fiona.Geometry classes. These are compatible with dict() outputs, so no changes should be needed in Raven-WPS.

For more information, see: Toblerity/Fiona#787

Changes

• Set minimum GDAL version at 3.1
• pip was comparing compatible versions of sphinx_rtd_theme, so this has now been set a >=1.0.
• The new Fiona API is now used for vector reprojection. Fiona.write is now used for writing output file JSONs.

Additonal Notes

The conda package is not yet released due to a few small changes needed in their testing suite. This should be addressed soon. See: conda-forge/fiona-feedstock#208 - This has been released on conda-forge.

[Zeitsperre]

@huard

The present failures are due to service issues with our THREDDS server. Should I make these tests XFAILable?

[huard]

The error I'm seeing has to do with cf-xarray:
No such file or directory: '/home/runner/work/RavenPy/RavenPy/.tox/py38/lib/python3.8/site-packages/cf_xarray/data/cf-standard-name-table.xml'

[Zeitsperre]

The THREDDS issues have been resolved, cf-xarray fixes are on the way: xarray-contrib/cf-xarray#415. (EDIT: the bad cf-xarray version has just been yanked. Will perform a re-run of tests - should pass now).

I'm wondering though if we should allow the THREDDS-related tests to fail since they're service-dependent. What do you think?

[coveralls]

coverage: 84.356%. first build
when pulling b5c6c0e on fix-geo-failures
into dd8d0ce on master.

[huard]

Is there a way to fail only if the service is not on ? If the service is available, but the test fails, I'd like to catch that.

[Zeitsperre]

I can definitely look into that. If it's simple enough that I can add it here this morning, I'll add it. Otherwise, no more changes. As it stands, though, am I good to merge?

[Zeitsperre]

Failing because of a new black. Opening another PR to fix this...