Making layouts/auto.py work for directed graphs

[diane-lee-01]

• Does this PR add any new dependencies?
• Does this PR modify any existing APIs?
  • Is the change to the API backwards compatible?
• Have you built the documentation (reference and/or tutorial) and verified the generated documentation is appropriate?

Reference Issues/PRs

Fixes #655. See also #736.

What does this implement/fix? Briefly explain your changes.

layout_umap and layout_tsne works for directed graphs.

Any other comments?

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[bdpedigo]

@dlee0156 just FYI the mypy type check and netlify checks are all expected to fail right now, but everything else should be passing once the builds all finish (as far as I know)

[daxpryce]

@dlee0156 just FYI the mypy type check and netlify checks are all expected to fail right now, but everything else should be passing once the builds all finish (as far as I know)

@bdpedigo why is the netlify check expected to fail? what is going on with netlify right now?

[bdpedigo]

@dlee0156 just FYI the mypy type check and netlify checks are all expected to fail right now, but everything else should be passing once the builds all finish (as far as I know)

@bdpedigo why is the netlify check expected to fail? what is going on with netlify right now?

not totally sure - i'd need to get the netlify credentials from the lab to look into this. has been low priority for me just cause we've talked various times about having RTD or some other way of doing this that doesn't rely on netlify but IDK what our current thoughts on that are. netlify also stopped being as useful once the docs were split because the preview link that netlify posted no longer worked unless you knew to paste "references" after the url

[daxpryce]

I think this looks fine, but I created #818 so we can make sure our type hinting and validations are keeping pace with us expanding our capabilities.

[bdpedigo]

LGTM, thanks @dlee0156! 🎉