Tweak Open Collective things

[vweevers]

No description provided.

[vweevers]

Lemme try running hallmark on the readme too, to update the TOC and validate the markdown, though I'm expecting the HTML anchors to cause problems.

[vweevers]

Oh, and get rid of CONTRIBUTING.md? Missed that one.

[vweevers]

though I'm expecting the HTML anchors to cause problems.

Yup. Markdown links to HTML anchors are rejected by remark-validate-links .Options:

1. Use HTML links when linking to HTML anchors. E.g. <a href="#ctor"><code><b>level()</b></code></a>. It means these links won't be validated, but at least the rest of the markdown will.
2. Adapt remark-validate-links to parse HTML anchors. Probably difficult because remark does not parse HTML, it's just a text node in the AST.

I prefer 1.