Add comparison to behavior trees

[orzechow]

This adds a comparison to behavior trees and some minor Readme improvements improving readability.

The comparison is based on our new paper section.

#patch

[orzechow]

@ll-nick ping – not sure, if you received a notification

[ll-nick]

Nice!

I really like the table view. I also think the readme rendering is just fine :)

[ll-nick]

I'll approve already but obviously you should not forget to remove the other version before merging :)

[orzechow]

Thanks for the feedback!

I cleaned up, tuned the table a bit more and squashed it into 79375ca

[orzechow]

Cleaned up the PR description for the release.

For later reference, this was the list vs table approach:

The latter doesn't look that great w.r.t. style on GitHub, but great on GitHub Pages 🤷

@ll-nick Please let me know, which one you prefer and I'll remove the other.

GitHub Readme:

GitHub Pages: