7.0.0

Changed file: URLs to have an opaque origin, which serializes to "null". Previously all file: URLs shared an origin serialization of "file://". This is underspecified, so either behavior is technically correct, but opaque origins is the more conservative choice.

Improved error messages for invalid input URLs to include those input strings.

Upgraded our webidl2js built-time code-generation dependency from 7.4.x to 9.x; see that package's changelog for details.