This continues #285 Changelog: - Upstream: https://github.com/servo/stylo/compare/ab77635ba341951b60227b658f4400d1766666f4...360787fff5114f5489ffdd6b2cfd39a34e1e3ac1 - Servo fixups: https://github.com/servo/stylo/compare/0c47f9cb52261cdcfda9d7115389d975d5d9fcf6...71737ad5c8b29c143a6c992af6222833f5d38b43 Servo PR: https://github.com/servo/servo/pull/41916
