Is this project still maintained?

This is a great library, and the only one I could find that stays lightweight while implementing basic DOM APIs. However, it's missing some features (like `Element.tagName`, `Node.replaceChildren`, etc.) and the PRs don't seem to be reviewed.

The issue mentions missing Element.tagName and Node.replaceChildren support but names no implementation files or tests. Inspect the repository's DOM API entry points and existing pull requests first; the scope and acceptance criteria need maintainer clarification before work can be considered done.

Written by the indexing model from the issue text.