Agreed. I'm really impressed by the professionalism shown by all members of the React ecosystem. Just the other day I had noticed a org member of the reactjs org (houses react-router, redux, etc) who was acting very unprofessional and expressed that it was a turn off seeing official members of the org basically telling a issue reporter/discussion was "annoying them" and Ryan Florence stepped up and said he was not tolerating that and even reached out to me on Twitter apologizing and saying that they do not condone such tones.

+1 to this. High-quality code from @mwiencek right out of the gate, and he was super responsive to my comments when I asked for changes. We're really grateful for the contribution.

I must be getting jaded - my first thought was that you were being sarcastic, so I was really pleasantly surprised when I browsed through. You're right, this is actually fantastic.

Do you happen to know what the thinking is behind having all the changes in one commit? I imagine it would make for a much neater master branch.

Won't this break things that relied on span's being there? I'm thinking it should have been opt-in initially. Or is it that way since it is a major version?

Specifically, in the old way, there were spans, and we had css styles targeting the spans sometimes.