What’s Happening: Work is underway to add native Markdown import support to LibreOffice Writer. This development, led in collaboration with a Google Summer of Code (GSoC) developer, aims to enable opening and editing of Markdown files (.md) using the MD4C Markdown parser.
Documentation in a repository.
ODT and DOCX are binary and can’t be versioned and compared like a plain text format can.
Thanks, for your explanation!
Now that you mention it I saw these .MD files several times on Github etc.