I will add a micro benchmark to see if the `yield return` is slowing things down, compared to just calling _sb.Add() inside Read*(). I will also see if it loo

I will add a micro benchmark to see if the `yield return` is slowing things down, compared to just calling _sb.Add() inside Read*(). I will also see if it looks cleaner that way. To be honest, the `yield return` is currently in there just because I thought it's "cool".