[PROMSORT] incomparable relation is misisng

[davejm95]

https://github.com/maciej7777/PrometheeDiviz/blob/master/PROMETHEE-PROMSORT_assignments/src/pl/poznan/put/promethee/Promsort.java

The method seems to be incorrectly implemented. The incomparable relation is missing in the code. When running the program in diviz, this results in alternatives incomparable to the limit profiles always being assigned to a worse class already in the first step assignments, no matter parameter b. This is not how the method works and also makes no sense in practice. See the incomparable relation original paper: https://www.sciencedirect.com/science/article/pii/S0925527306002131
The incomparable relation should probably be inserted in the "isA1IndifferencedToA2" function on line 44

[maciej7777]

Hi Dave, thank you for creating an issue for this problem! I will take a look on this when I find some more time (which may take longer then just few days - as I am no longer a student). But for sure I will do my best to fix the problem in reasonable time.