💥 📒 Add troubleshooting for loading old models

[jas-ho]

Closes #960

This PR expands the pykeen documentation to describe

• exceptions users might encounter when attempting to load models trained on a different version of pykeen
• two things users can try to avoid these exceptions

It includes the main takeaways from #960. The PR is mostly just an attempt to write-up @mberr 's excellent explanations in the mentioned thread.

[github-actions]

Congrats on making your first Pull Request and thanks for taking the time to improve PyKEEN! ❤️! 🎉

[jas-ho]

@mberr I was not sure which (if any) of the PR description templates should be used for PRs which update the docs. let me know if the description needs other details. thanks!

[cthoyt]

@jas-ho thanks for making this contribution. Team pykeen takes a lot of pride in having excellent documentation so this is much appreciated.

However we might want to rearrange where it’s living. The first steps document is getting pretty big 😅

[jas-ho]

@jas-ho thanks for making this contribution. Team pykeen takes a lot of pride in having excellent documentation so this is much appreciated.

Thanks, happy to be able to give back to this very cool project!

However we might want to rearrange where it’s living. The first steps document is getting pretty big sweat_smile

yes, makes total sense. let me hear what your ideas are. one option might be to have a dedicated "trouble shooting" document.

[cthoyt]

@PyKEEN-bot test

[cthoyt]

Thanks @jas-ho !