OKay, I have the browser tests for dashboard collapser and the environment collapser (not name filter) working on 3.3.17 and 3.4.0-Beta1 via a single powershell script locally. I'd give the links for the sauclabs tests but the builds link is private (bummer). Next up is putting that multi-job powershell script into AppVeyor. Once I get the whole process working at least somewhat smoothly with results showing up in PRs then I'll merge to master and then work can begin on filling out the rest of the browser tests.
That and this 'down time' is good for getting all this pipeline stuff lined up better. I kind of envision that once this is setup properly if we trust it enough have the build auto publish extensions to Google if all the unit tests pass as well as browser tests.
It's only a what, 15 hour flight or so? No big deal. ;-)