[AsyncAwait]

Thanks to Steve and also carols10cents for this excellent revision.

[steveklabnik]

Thanks to you both! And very seriously, this edition could not have happened without carols10cents. I am exceedingly grateful to have her as a co-author. While the original book was largely me, this edition is very much indebted to her work.

[Dangeranger]

Good point, I didn't mean to gloss over the other authors and contributors.

[carols10cents]

<3