web-features package
What it does
web-features is the package that describes Web platform features and provides Baseline status reports.
Who is it for
Tool authors integrating feature-level compat data, contributors proposing new feature definitions, and anyone wanting to understand how individual BCD entries map to higher-level feature concepts.
Where to find it
github.com/web-platform-dx/web-features
Who is maintaining it
The web-platform-dx working group. Contributions are welcome via pull requests — particularly for adding feature definitions and mapping BCD keys to features.