The project has transitioned to a non-commercial license (https://creativecommons.org/licenses/by-nc-sa/4.0/ https://creativecommons.org/licenses/by-nc-sa/4.0/)

The project has transitioned to a non-commercial license (https://creativecommons.org/licenses/by-nc-sa/4.0/ https://creativecommons.org/licenses/by-nc-sa/4.0/) until sustainable funding has been acquired. The code is still open source, but apparently asking to be compensated for work that improves the security of the entire Android ecosystem is too much for FOSS fanatics.