Convert list item markers

[hukkin]

Convert list item marker symbols. For unordered lists, always prefer -. If there are sequential lists, alternate between - and *.

Do the same for ordered lists using . (preferred) and ).

[antazoey]

What is the reasoning for preferring - over * ?
Would it make sense to allow this to be configurable?

[hukkin]

There is no reason besides that mdformat is opinionated and happens to prefer -, and that - happens to be easier to access on some keyboard layouts. See https://mdformat.readthedocs.io/en/stable/contributors/contributing.html#contributing on adding configuration options.

[antazoey]

Based on this sentence from the contributing guide:

Note that mdformat is an opinionated tool that attempts to keep formatting style changing configuration to its minimum. ? > New configuration will only be added for a very good reason and use case.

I sense that a PR that adds a configuration option for preferring * may not be wanted.

I do personally prefer the * a little more because I can't see the hyphen symbol very well, but it is NBD.

[hukkin]

Yes, I don't think this is a strong enough reason to justify the conf option.