Animations in docs do not work (bad signature)

[davidebettio]

What version of async are you using?

Which environment did the issue occur in (Node/browser/Babel/Typescript version)?

Is there a compiler in your toolchain? If so, is it targeting ES2017 or later and preserving async functions?

What did you do? Please include a minimal reproducible case illustrating issue.

What did you expect to happen?

What was the actual result?

[aearly]

Animations come from this PR: https://github.com/caolan/async/pull/216 . I guess GH doesn't allow hotlinking from issues anymore, or the sig expired.