I noticed something, namely the Android version with the version number 0.2.1 is given here. During installation and in the app info I see that this is actually the version 0.2.0. Was the file accidentally misnamed or is that intentional?
I checked the version number in the game, in the "About" menu and it says version number 0.2.1. So when compiling the apk, an incorrect version number was specified. It can happen, so it's not bad. I assume that the new content is included because I only started with version 0.2.1. I'm really looking forward to the public version 0.2.2.