Marionette changes in Firefox 81

[Henrik Skupin]

Hi,

Firefox 81 has been released last week, and a couple of improvements and
bug fixes happened to the WebDriver conformance (means the Marionette)
component.

You can find all the details in the change log for web developers:

https://wiki.developer.mozilla.org/en-US/docs/Mozilla/Firefox/Releases/81#WebDriver_conformance_Marionette

Please note that currently a major rewrite of the Marionette code to
support our site-isolation feature (Fission) takes place. As such if you
notice any kind of regression please let us know and file a bug on
Bugzilla. The following link can be used:

https://bugzilla.mozilla.org/enter_bug.cgi?product=Testing&component=Marionette

Thanks a lot.

Best,

--
Henrik Skupin
Senior Software Engineer
Mozilla Corporation