feat(nuemark)!: proposal to use different section separator

[nobkd]

• link Nuemark2.0 issues #379 (comment)

Increase cmark compatibility by a tiny bit.

Use +++ as section separator, makes it clear, that no traditional <hr> is used

hello section 1

+++

hello section 2

[tipiirai]

Damn. A tough decision. I understand where you're coming from. I think feature changes of this caliber should be discussed first. I feel +++ puts this closer to hackers and not content writers, which is the goal. I also don't value commonmark very highly. Content development experience is the priority. Do you think +++ is better than === ?

[nobkd]

I thought about new (section) on the plus symbol, but it doesn't really matter. We can also use === as section splitter.
But I wouldn't use ---, because I always used it as <hr> (and didn't know about e.g. *** as valid alternative) and it feels most intuitive for <hr> (for me) too.

I can see both +++ and === as viable/valid options. The decision is, what you like more, though. (or allow both 🤷‍♂️ :)
I'll change the code depending on your preference.

Alternatively I can also close this one and we can discuss this first somewhere else.

[tipiirai]

My original idea with --- was to use the same separator as in front matter. One syntax to remember. But I feel this is often used as <hr>. This is a compromise, but I'm leaning towards "---" as section separator. It feels so natural, especially inside blocks.