[FIX] Pillow instead of PIL in setup.py
[FIX] Pillow instead of PIL in setup.py

9b544a2 switched from PIL to Pillow but setup.py still referenced PIL.
This causes both to be installed which is a bad idea:
"PIL and Pillow currently cannot co-exist in the same environment"

mvidalgarcia/indico,indico/indico,OmeGak/indico,pferreir/indico,DirkHoffmann/indico,mvidalgarcia/indico,mic4ael/indico,mvidalgarcia/indico,pferreir/indico,mic4ael/indico,indico/indico,indico/indico,mvidalgarcia/indico,OmeGak/indico,ThiefMaster/indico,pferreir/indico,DirkHoffmann/indico,OmeGak/indico,pferreir/indico,OmeGak/indico,ThiefMaster/indico,ThiefMaster/indico,indico/indico,mic4ael/indico,ThiefMaster/indico,DirkHoffmann/indico,mic4ael/indico,DirkHoffmann/indico