This is going to cast some big ripples. There are a lot of packages that have been waiting for this. It might have been better in the long run if every one got

This is going to cast some big ripples. There are a lot of packages that have been waiting for this. It might have been better in the long run if every one got on the AsynchIO train, but if nothing else the python2/3 saga has shown that standards can have a lot of momentum.