I'd like to take care of issue #20027 (and issue #20239), concerning std.zip. As this are actually lot's of small issues I'm not sure, how to handle this: a) One big PR with lot's of small commits? b) One small PR after another? c) Like b) but trying to submit some nonclashing PRs in parallel? (not sure if this is possible at all) d) ??? What's best?