Code review comment for ~cjwatson/lazr.delegates:rhinectomy

Thanks for the info about "MPs on unlanded ones" - this was indeed new.

I know it would not have been necessary to combine coverage, but as I never did that before, this was a nice fun "project" for the weekend.

Though it turned out it is not that complicated - once you know how it works :-)

This "knowledge" could come handy when we have to combine the coverage results for different Python 3 versions (I look at you Python 3.10 :-) ).

see https://code.launchpad.net/~jugmac00/lazr.delegates/+git/lazr.delegates/+merge/412213