Add getSectionNumeral() function

[benjaminleonard]

Currently using $sectnum() in a custom asciidoc section converter—figured it might be useful to get the function wrapper included and typed.

First time contributor, hopefully it's all formatted correctly.

[ggrossetie]

That's look good! Thank you 😄
As mentioned by Dan on Zulip, could you please use getSectionNumeral as the primary name (and getSectionNumber as an alias)?

When you file the issue, I propose the name getSectionNumeral(). The value is not always a number, which is why we use that terminology. However, I'd also support adding getSectionNumber() as an alias.

https://asciidoctor.zulipchat.com/#narrow/stream/279645-users.2Fasciidoctor.2Ejs/topic/Accessing.20sectnum.20with.20asciidoctor.2Ejs/near/298429578

[benjaminleonard]

Oh I missed that, done!

I can add the alias too if you would like—and have an example.

[ggrossetie]

I can add the alias too if you would like—and have an example.

I think that would be nice since a lot of users might assume that setnum is short for section number (numeral is less common)

[benjaminleonard]

Done! (I think)

[ggrossetie]

It looks good, thanks again, I will merge it once the build is successful