HAMILTON cast recording/lyrics

Does anyone know why a digital booklet of the lyrics weren't included with the download of HAMILTON? I know it's been made available as a free download elsewhere, which is cool if inconvenient. It seems odd to me, especially when most digital download albums come with a PDF of the booklet. So is anyone aware of why it was handled this way?

I checked both Amazon and iTunes and neither listed the booklet (unless it downloads but is not listed, which would be weird because other booklets are listed).