'Did you mean xxxx' response for Whedon

[arfon]

It would be great if Whedon could make command suggestions when authors/editors/reviewers get the syntax a little wrong.

For example, if I say @whedon set @arfon as reviewer this is actually incorrect, the command should be @whedon assign @arfon as reviewer (or @whedon add @arfon as reviewer).

Ideally, Whedon would be able to respond with a helpful 'perhaps you meant to say...' and suggest possible commands.

Implementation-wise, I'm not exactly sure how to do this, perhaps we could look at how far the commands received are (e.g. like this) from the available commands Whedon knows about already?