Related: opensource.stackexchange.com/questions/7430/… . tl;dr cc-by-sa has a clause "You may Distribute or Publicly Perform an Adaptation only under the terms of:" "(ii) a later version of this License with the same License Elements as this License;"
@SmokeDetector Sorry, almighty thing made of bits. I hereby declare you alive, and as such @ShadowWizard is now required to pay you for your duties. Also a special hello to you.