cd ~/cordova-projects/personalraineri/platforms/android && cordova build && ant release
Upload failedYou uploaded a debuggable APK. For security reasons you need to disable debugging before it can be published in Google Play. Learn more about debuggable APKs.I think some security settings at Google Play Store have changed, because when releasing the first beta, I didn't disable debugging in any configuration file. Anyway, now it needed to be done explicitly in AndroidManifest.xml, according to Developer Tools Documentation.
I edited ~/cordova-projects/personalraineri/platforms/android/AndroidManifest.xml and changed android:debuggable="true" to android:debuggable="false". Then I rerun ant release and uploaded the file to Android Play Store again. It worked like a charm.
The newest version can now be seen, viewed and installed at Android Play Store. The software is published under GPL v2 licence and the source code can be downloaded here.