Various improvements

[whitequark]

Please see individual commits for descriptions.

[japaric]

@calebmer friendly ping. Any chance you could review this PR? We have on PR blocked on this one. 🙂

[calebmer]

Looks good 👍

[japaric]

@calebmer Thank you! Could you publish a new release with these changes?

[calebmer]

@japaric I’ll get to that tonight. Would you be interested in future maintenance of this crate?

[japaric]

I’ll get to that tonight.

Thank you!

Would you be interested in future maintenance of this crate?

Sure :-).

[calebmer]

@japaric if you could send me over the links and emails necessary to add you that would be great 😊

[japaric]

Hmm, so I think you'll have to add me as a collaborator to this repository using
this link:

https://github.com/calebmer/inflections/settings/collaboration

And then add me as an owner of the inflections crate on crates.io using this
command:

$ cd /path/to/inflections

$ cargo owner --add japaric

I think that should do it. (I have never used the cargo owner command before
but that's what the documentation says.)

[calebmer]

@japaric done. Feel free to publish the next release 😊

[japaric]

@calebmer Thank you! Will do.