there are 3 versions currently. One by TGalal, one by Cepi, and one by CodeRus. They were all working until whatsapp added encryption to their application. Now the devs are working hard to get wazapp up and running. It is apparently already fixed, Tgalal is just ironing out a few bugs and should be up by tommorow, hopefully.
I don't think there are three versions, There is only one version. TGalal's version is what all are based on. Cepi uses TGalal's code he then programs his code on it and then sends it to TGalal for approval before making a deb file. CodeRus picks all the daily updates from TGalal, Cepi and Knob and create a deb file for us. Throwing out he assumptions that there are three different files gives an erroneous impression.