I'm going to throw an addendum on to this one: if you fix a bug, and then do a refactor, I'll agree, it's probably best to split the PR's up. But that's just th

I'm going to throw an addendum on to this one: if you fix a bug, and then do a refactor, I'll agree, it's probably best to split the PR's up. But that's just the common sense of keeping changes small and logically contained. I'll also agree that it's best not to interweave the two.