The Register (in its usual somewhat snarky style) has some good news about developments in Firefox
[Project Quantum] is not a new web browser. Quantum is Mozilla’s project to build the next-generation web engine for Firefox users, building on the Gecko engine as a solid foundation. Quantum will leverage the fearless concurrency of Rust and high-performance components of Servo to bring more parallelization and GPU offloading to Firefox.
The browser keeps evolving to become a more comprehensive platform, operating system.
More information here.
You can see me scratching my head over on Stack Overflow.
I’ve got some kind of answer, not sure if it’s the right one yet. Will keep you posted when it’s in the repository.
Update : OK. It’s up on GitHub. Would welcome feedback if it’s now working. (Safari on Mac, IE on Windows, Chrome on Windows etc.)