I am curious what are people using for release notes in their own projects? Towncrier, GitHub Releases, something else?

If anyone tries my script on their repo and runs into issues, I am happy to help troubleshoot. Also, the output is actually plain Markdown (no JSX). The only Docusaurus specific bit is the YAML frontmatter header. If you are not using Docusaurus, you can just strip that header and rename .mdx to .md.