WebSerial has landed in Firefox Nightly !! 🎉

Enable it in about:config and it all just works as expected. Took a brand new ESP32 and had a new Bluetooth proxy added to Home Assistant within 2 minutes 👌

@balloob As far as I remember @mozilla once stated that they would have not implemented it because it was a potential huge secturity threat, I just wonder what made change their mind.
@paoloredaelli @balloob @mozilla I would imagine popularity as well as them just figuring out a security model for implementing it. Maybe, like Chrome, it's not persistent between page loads and must be reauthorized every visit per-device.