Gallery for extension

[CarsonSlovoka]

This is a great library👍 and I noticed that it contains some useful extensions included, build-in extensions
I want to ask questions like

• Math{Katex, Latex}
  • issues/32
  • discussions/322
• issues/56^{unicode heading IDs}
• Allow mixed case attribute names ^{text {linenos=true linenostart=42}}

Do they have any chance to be included in this extension (build-in extensions)?
Or what are the requirements satisfied to be included in the extension? (100% commonmark-spec?)

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If the criteria for being built-extension are very stringent, can we provide a gallery-like area where people can share their extension?
For example, create a new discussion for that (and add a table on the README?). Then, user can share their links, and people can evaluate them to increase credibility and give newcomers^{dis-212, is-163} directions on how to make extensions.

[yuin]

Do they have any chance to be included in this extension (build-in extensions)?
Or what are the requirements satisfied to be included in the extension? (100% commonmark-spec?)

Basic policy: Extensions can be implemented as an external library should be implemented as an external library to keep goldmark simple for maintainability.

Why goldmark has built-in extensions?

1. Historical reason: blackfriday was a de facto-standard library. Many users will be migrate from blackfriday to goldmark. So I added extensions that are included in blackfriday as a built-in extensions.
2. It can not be implemented as an external library

If the criteria for being built-extension are very stringent, can we provide a gallery-like area where people can share their extension?

Just create a PR that adds an extension to the README.

[CarsonSlovoka]

I did not notice that the original README file included the plugin list. 😅