2.0.0
To match JavaScript's Intl, locales (output) are now formatted using a hyphen instead of underscore. As input underscore format is still supported.
- Breaking: format locale using hyphen (thx @benpptung)
- Breaking: Drop express 3.x support
- Breaking: Drop non-lts/latest node support (remove babel build)
- Warn about invalid configuration in non-production environment