I can only guess, but you know that you can create Mac versions with the Renpy SDK if you got the Win/Linux version? (Which was probably the case here for creating the crunched Mac version...)
I think the developers of the game are officially releasing two platforms PC and MAC. Therefore, to make up and re-create a version in a compressed version has no resonance.
The previous version posted a good man for the mac and you could continue to develop the story.