Add front-matter for Input/Output without line numbers.

[nervecenter]

It might be useful to have non-numbered front-matter where notes or descriptions of inputs and outputs can be listed, like so:

[nervecenter]

Made pull request: #30

[platformer]

I might be misunderstanding, but I believe this is achievable with the header parameter

[nervecenter]

I might be misunderstanding, but I believe this is achievable with the header parameter

Yes, but in _build-algo-header(), using the header parameter skips all the default title and parameter styling.

[platformer]

I'm against adding this for a few reasons

1. If there's a front-matter parameter that takes arbitrary content, there's no obvious way to ensure it's styled in the same vein as title and parameters by default. That would require the user to manually style front-matter to match the rest of the component, or pass content values to title and parameters, both of which require similar effort to overwriting the entire header.

2. It's currently trivial to copy the code that outputs the default header if the user wishes to reuse that implementation. I'd be open to splitting the title out into a separate function so that users have an obvious function they can import, should they need it.

3. I find the current api of algo unwieldy already, and I'm waiting for Typst element functions so I can completely overhaul it. Given that, I'm hesitant to add even more parameters, especially if the functionality is replicable through other means.

[nervecenter]

Here's an example using header to replicate the output of the front-matter implementation:

    header: [
        #underline(smallcaps(text(size: 1.1em)[FFT-Freqs]))
        $(italic(N), Delta f)$:\
        *Input:* Time-domain signal length $N$, sampling bandwidth $Delta f$.\
        *Output:* Array of one-sided frequency bands.
    ],

A bit unwieldy to be sure. If element functions would clean this up, then I'm all for using my modified package locally until you can make that redesign. Is it in the pipe for Typst?

[platformer]

Unfortunately there's no current roadmap for element functions as far as I'm aware, but it would be such an improvement that I don't feel as motivated to make major changes to the package as it currently exists.