anchor.diff:        "python34"
       else if isPy35 then
         "python35"
  +    else if isPy36 then
  +      "python35"
       else if isPyPy then
         "pypy"
       else
  
positive.code:   isPy33 = python.channel == "3.3";
    isPy34 = python.channel == "3.4";
    isPy35 = python.channel == "3.5";
    isPyPy = python.executable == "pypy";
    isPy3k = strings.substring 0 1 python.channel == "3";
  
  
negative.code:     isPy33
      isPy34
      isPy35
      isPy36
      isPyPy
      isPy3k
      python
  